I signed up for a competition where i have to use MIT app inventor and i have 27 days left. What are the dos and donts and whats a good way to learn and where can i learn good UI and how long will it take to learn (Ive been coding on a language called lua for 8 months and python for 2 months) and my game plan is to learn it in 5-7 days and then after that to keep making projects prior to the competition so could please anybody provide me information!
Here are some resources to help you learn to use the AI2 tools. A very good way to learn App Inventor is to read the free Inventor's Manual here in the AI2 free online eBook App Inventor 2 Book: Create Your Own Android Apps ... the links are at the bottom of the Web page. The book 'teaches' users how to program with AI2 blocks.
There is a free programming course here Course In A Box and the aia files for the projects in the book are here: App Inventor 2 Book: Create Your Own Android Apps
How to do a lot of basic things with App Inventor are described here: How do you...? .
Also look here App inventor español. Offline. Tutorial. Ejemplos. Instalación. Códigos. Juegos. Curso gratis de App inventor. and here Tutorial Index | imagnity for more tutorials including Imagnity.com List Tutorial, Mirrored - @Saj
Learn about components Component Reference
and visit the Library The MIT App Inventor Library: Documentation & Support Help>Library on the MENU
Tysm your a life saver! 
but is this AI2 the same as mit app inventor?
AI2 == AppInventor 2 (the current version of AppInventor)
If you can handle lua and python you can handle AI2.
Top 5 differences:
- AI2 is event oriented so you must use events for callbacks
- Screens are separate programs that only share TinyDB
- Lists are linked lists
- The Clock is in the Sensors drawer
- Extensions are only for Android, not iOS
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In AppInventor, list indexing starts from 1, just like in lua.
Yes, Mit App Inventor 2 - Mit AI2
I dont think ill be allowed to using extensions during the competition either way using ios or not.