itunes.apple.com - Impress Remote is an iOS application that allows you to control your LibreOffice Impress presentation using your phone. An Android version is also available.
play.google.com - Impress Remote is an Android application that allows you to control your LibreOffice Impress presentation using your phone. An iOS version is also available.
www.libreoffice.org - Open source office suite of programs: document editor, spreadsheet, presentations, math formulas, database, diagram and drawing applications.
www.w3schools.com - W3Schools has a complete online collection of web programming tutorials including HTML, CSS, Javascript, Perl, Java, PHP, Python, and XML. Pretty much everything you need to learn for programming for the client or server!
https://cgcookie.com/ - CG Cookie teaches how to use Blender 3d, Unity, and sculpting. I recommend starting with their 2d basic art concept courses. They have the individual courses available, but they've organized the course into "learning flows" that track...
https://krita.org - Krita is a free and open source digital painting software. Perfect for concept art, texture painting, creating illustrations or comics. I love how well it integrates with my graphics tablet and pen. Very powerful and full-featured.
https://www.blender.org - Blender is a free and open source 3d animation software. It is incredibly powerful, and a full featured to support your entire 2D or 3D animation workflow.