Hello @alessandronavarros, and welcome to Bubble and the fabulous Bubble forum.
Firstly, your English seems to be better than you are giving yourself credit for.
This exact question was answered in a parallel thread on the forum:
My specific advice for you is to do the following:
Go to youtube and type in “Bubble tutorial Gaby [the topic you are interested in]”.
@romanmg is a pioneer in Bubble coaching and has created immensely valuable coaching topics that are available on youtube. This is how I learned, and I believe many others on this forum.
I wish you the best of luck in your learning.