How can I do this kind of project? I'm not so good to build apps with MIT but I can have some
ideas. so, if once I ask how to deal with this one in order to realize such an app. can you guide me please?
Sorry please! I've forgotten to greet you first...
Does my test aia work for you?
If so, then this should be enough guidance. 
How can i open this file please? so, with which kind of browser?
Oh thank you a lot. I'm really grateful... it doesn't matter if I ask you your mail and whatsapp number if once you it?
Please only ask in the community. You will get answers here.
And open a new topic and describe exactly what you intend to do.
I made it for you. Adjust the topic if necessary and describe your problems (your goal).
Perhaps if you take the free course shown mentioned below you can learn to program Audrey.
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
Learn about components Component Reference
and visit the Library The MIT App Inventor Library: Documentation & Support Help>Library on the MENU