App inventor2 link
http://ai2.appinventor.mit.edu/?locale=en
Set up App Inventor on your laptop
http://appinventor.mit.edu/explore/ai2/setup.html
Tutorial 1 Hello Purr
http://appinventor.mit.edu/explore/ai2/hellopurr.html
Paint Pot ( part 1 )
http://appinventor.mit.edu/explore/ai2/paintpot-part1.html
Paint Pot ( Part 2 ) change the line sizes
http://appinventor.mit.edu/explore/ai2/paintpot-part2.html
Don’t Shake Me App! Tutorial PDF Follow on from “Talk to Me"
Video Wall Tutorial
Video files should be in 3GPP (.3gp) or MPEG-4 (.mp4) formats. For more details about legal formats, see Android Supported Media Formats.
App Inventor for Android only permits video files under 1 MB and limits the total size of an application to 5 MB, not all of which is available for media (video, audio, and sound) files. If your media files are too large, you may get errors when packaging or installing your application, in which case you should reduce the number of media files or their sizes. Most video editing software, such as Windows Movie Maker and Apple iMovie, can help you decrease the size of videos by shortening them or re-encoding the video into a more compact format.