Hello everybody. I will write about movies for practice my english, because the films is one of my big tastes.
(Hello all. I will write about movies to practice my English because films are one my favorite interests.) [no comma before “because” – it starts a subordinate clause]

In this oportunity, I will talk a little about Youth, a film by the Italian director; Paolo Sorrentino.
(In this opportunity, I will write a little about “Youth,” a film by the Italian director Paolo Sorrentino.) [I changed “talk” to “write” just to be specific; “talk” is okay in an informal way.]

For me, Youth, is a history about memories and nostalgia. Two old friends in a luxury hotel at the Alpes. A hotel full of past glories; a old Maradona for example.
(For me, “Youth” is a history aobut memories and nostalgia. It is about two old friends in a luxury hotel in the Alps, a hotel full of past glories and an old Maradona.)[Note how I used noun and verbs in my changed sentence.]

The movie talks about how the decisions of our youth, affect, for better or worse, the future life. But it´s beautiful!
(The movie talks about how the decisions of our youth affect, for better or worse, their future life. But it is beautiful!). [no comma before “affect”; good use of commas around your modifier]

This movie, is not better, for me, that "La Grande Bellezza"; the last movie of Sorrentino. But is a great movie anyway.
(This movie is not better than “La Grande Bellezza,” which is Sorrentino’s last movie. But it is an excellent movie none the less.) [just playing with the ideas to make them sound a bit more natural]

I´m sorry for the poor synopsis, but my vocabulary is still very short. I expect to be better with your help in the next movie´s synopsis.

Keep up the good work!! You are doing fine. 

Youth; a Paolo Sorrentino´s Movie