What those Blocks do is explained in the documentation here>
Ramon provided you a link to a tutorial
If you do the tutorial mentioned, the default values fill in automatically. The documentation for CloudDB also tells you how to how to set up a redis server of your own is discussed here> 馃煡 HOWTO: Setup Redis Server with SSL for use with AI2
Then you may need to [learn how to use the App Inventor tools](ere 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 espa帽ol. Offline. Tutorial. Ejemplos. Instalaci贸n. C贸digos. 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)