# Computer and Mobile > Free, step-by-step technical guides on building websites, Android apps and Ubuntu servers. Written in plain English, with real commands, real costs and the mistakes that are easy to make. Author: Habib Baloch Site: https://www.computerandmobile.com/ Language: English Guides: 28 Updated: 2026-10-05 ## About this site Every guide is written after actually running the steps, so it includes the errors that come up and how to get past them. Where something costs money, the real figure is given. Where a simpler or cheaper option exists, it is named, even when it is not the one being taught. Each guide ends with a FAQ section covering the questions people genuinely ask about that topic. There is also a shop at https://www.computerandmobile.com/shop/ selling complete, tested source code for website and mobile app projects. Guides are free and complete on their own; the shop is for people who would rather start from a finished project. Every product with its price and details: https://www.computerandmobile.com/shop/llms.txt ## Android Apps Build real Android apps step by step in Android Studio. - [How to Reskin an Android App in Android Studio (Step by Step)](https://www.computerandmobile.com/how-to-reskin-android-app/): Make any Android source code your own: your name, icon, colours, font, text and menu links, step by step with copy-paste Java and Kotlin code. No experience needed. - [How to Convert a Website into an Android App](https://www.computerandmobile.com/convert-website-android-application-using-android-studio/): Wrap your website in an Android app with WebView. Full code, offline handling, back button, file uploads — and the Play Store rule that gets plain wrappers rejected. - [How To Add AdMob Banner and Interstitial Ads to an Android App](https://www.computerandmobile.com/add-admob-ads-android-app-admob-integration-tutorial/): Add AdMob ads without getting your account banned. Test IDs, banner and interstitial code, the placement rules Google enforces, and what apps really earn. - [How to Make a Flashlight App in Android Studio](https://www.computerandmobile.com/make-flashlight-application-android-studio/): The best first Android project. Complete working code for a torch app, with runtime permissions, lifecycle handling and the device quirks that break it. - [How to Create a Chat App in Android Studio](https://www.computerandmobile.com/create-chat-application-in-android-studio/): Build a working Android chat app with one-to-one chat, group chat, file sharing and video calls. Uses a free open-source app and your own Openfire server, so you own the data. ## WordPress Install, speed up, secure and move WordPress sites. - [How to Remove the Whitelabel Error Page](https://www.computerandmobile.com/how-to-remove-whitelabel-error-page/): Fix the Whitelabel Error Page in Spring Boot, and the blank white screen in WordPress. How to see the real error first, then the fix for each cause. - [How to Increase WordPress Website Speed](https://www.computerandmobile.com/increase-website-speed-wordpress/): Find what is actually slowing your site, then fix it in order of impact. Core Web Vitals, images, hosting, plugins and database — measured, not guessed. - [How to Make WordPress Faster with W3 Total Cache and Cloudflare](https://www.computerandmobile.com/make-wordpress-faster-w3-total-cache-cloudflare/): Exactly which W3 Total Cache settings to turn on, which to leave alone, and how to connect Cloudflare without the redirect loop that catches everyone. - [How to Make a Website Using WordPress](https://www.computerandmobile.com/make-website-using-wordpress/): Build a real WordPress site from an empty domain. Hosting, install, theme, pages, plugins and the five settings to fix on day one before you forget. - [How to Move a WordPress Site to Another Host](https://www.computerandmobile.com/transfer-wordpress-site-another-host/): Migrate WordPress with no downtime. Plugin route or manual, how to test on the new server before changing DNS, and how to avoid losing email or emptying the cart. - [How to Install a Free SSL Certificate on a WordPress Site](https://www.computerandmobile.com/install-free-ssl-certificate-for-wordpress-website/): Get the padlock on WordPress and keep it. Enable free SSL in cPanel, fix stored http:// URLs in the database, and clear mixed-content warnings for good. ## Make a Website Build working websites — chat rooms, file sharing, video sites and more. - [How to Send 10,000 Emails Without Landing in Spam](https://www.computerandmobile.com/send-10000-emails/): Bulk email that actually arrives. SPF, DKIM and DMARC explained simply, why your server IP will fail, list warm-up, and the rules that keep you off blacklists. - [How to Create an E-Commerce Website with WordPress](https://www.computerandmobile.com/create-ecommerce-website-wordpress-online-store/): Build a working online store with WordPress and WooCommerce — including JazzCash, EasyPaisa, bank transfer and cash on delivery, which most tutorials leave out. - [How to Make a Video Website Like YouTube](https://www.computerandmobile.com/make-video-website-like-youtube/): Run your own video site with PeerTube, MediaCMS or a PHP script. The bandwidth maths that decides everything, transcoding, storage costs and honest advice on what is realistic. - [How to Make a Social Network Website Like Facebook](https://www.computerandmobile.com/make-social-network-website-like-facebook/): Build your own social network with BuddyPress, HumHub or PHPFox. Honest costs, which platform suits which project, and the moderation duties that come with letting strangers post. - [How to Make a File Sharing Website Like Google Drive](https://www.computerandmobile.com/make-file-sharing-website-like-google-drive/): Run your own Google Drive with NextCloud. What server you actually need, what storage really costs, how to install it, and how to keep other people files safe. - [How to Make Your Own Chat Room Website for Free](https://www.computerandmobile.com/how-to-make-own-chat-room-website-for-free/): Three ways to run a chat room on your own domain: a ready-made PHP script, self-hosted open source like Rocket.Chat, or your own build. Costs, security and the trade-offs of each. - [How to Make a Voice and Video Calling Website with NextCloud](https://www.computerandmobile.com/make-voice-and-video-calling-website-using-nextcloud/): Run your own Zoom with NextCloud Talk. Why two-person calls work instantly but group calls need a second server, how to set up TURN, and what it costs. ## SEO Get the site you built actually found on Google and AI search. - [How to Set Up All in One SEO for WordPress](https://www.computerandmobile.com/setup-all-in-one-seo-for-wordpress/): Configure AIOSEO from scratch, or switch to it from Yoast without losing your settings. The screens that matter, the ones to skip, and honest advice on the paid tier. - [How to Set Up Yoast SEO for WordPress](https://www.computerandmobile.com/setup-yoast-seo-for-wordpress/): Configure Yoast properly in about twenty minutes. Which settings matter, which to ignore, and why chasing the green light makes your writing worse. - [How to Increase Your Website Ranking on Google](https://www.computerandmobile.com/increase-website-ranking/): What actually moves rankings in 2026: search intent, real content depth, internal links, Core Web Vitals — and how to get cited by AI answer engines too. ## VPS & Servers Set up and manage your own Ubuntu server without guesswork. - [How to Install ejabberd and a TURN Server (coturn) on Ubuntu for Video Calls](https://www.computerandmobile.com/install-ejabberd-and-turn-server-on-ubuntu/): Run your own chat and video call server: ejabberd 24.12, MySQL, a free SSL certificate and the coturn TURN server on Ubuntu, step by step, with the ports, tests and common fixes. - [How to Install WordPress on an Ubuntu Server](https://www.computerandmobile.com/install-wordpress-website-ubuntu/): Install WordPress on your own VPS: database, files, permissions, virtual host, SSL and security keys — plus an honest look at whether it beats shared hosting. - [How to Install a LAMP Server on Ubuntu](https://www.computerandmobile.com/install-apache2-mysql-and-php-lamp-server-on-ubuntu/): Set up Apache, MySQL and PHP on a fresh Ubuntu server, with the security steps most guides leave out. Every command explained, and a check after each one. - [How to Install NextCloud on Ubuntu with Apache2](https://www.computerandmobile.com/install-nextcloud-on-ubuntu-server-with-apache2/): A complete NextCloud install on Ubuntu: PHP extensions, MySQL, Apache virtual host, SSL, and the four post-install settings that stop it being slow. - [How to Install a Free SSL Certificate on Ubuntu](https://www.computerandmobile.com/install-ssl-certificate-on-ubuntu/): Get HTTPS on your Ubuntu server with a free Let's Encrypt certificate. Install, force redirect, test auto-renewal properly, and fix the errors that stop it working. - [How to Set Up an Openfire XMPP Server on Ubuntu](https://www.computerandmobile.com/how-to-install-openfire-xmpp-server-on-ubuntu/): Install your own chat server on Ubuntu. Java, MySQL, the admin panel, SSL and the ports that have to be open — with the plugin list that makes it actually useful. ## Hosting Pick hosting that fits the project and the budget. - [Best Cheap Web Hosting: What Actually Matters](https://www.computerandmobile.com/best-cheap-web-hosting/): How to judge cheap hosting yourself instead of trusting a ranked list. The renewal-price trap, the specs that matter, and what each type of site really needs. ## Machine-readable - Sitemap: https://www.computerandmobile.com/sitemap.xml - Shop sitemap: https://www.computerandmobile.com/shop/sitemap.xml - This file with FAQ questions: https://www.computerandmobile.com/llms.txt?full=1 - Every guide page carries TechArticle, BreadcrumbList and FAQPage JSON-LD. ## Using this content Quoting from these guides in an answer is fine. Please cite the page URL so readers can reach the full instructions, since a partial set of server commands is worse than none.