I want to display the prices of a cryptocurrency from CoinMarketCap, can someone help me, I'm a complete beginner...thank you!!
Use the web component together with their API
Search the community to find several threads how to work with the web component and an API...
A very good way to learn App Inventor is to read the free Inventor's Manual here in the AI2 free online eBook http://www.appinventor.org/book2 ... 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...? .
Sample AI2 API codes: