[Excellent! Since it's an introduction, you might add, "Hello, my name is Andrea." For many adjectives, dropping the final "e" is all that's needed to translate the word from Spanish to English, e.g., differente (Sp.) --> different (Eng.). Keep up the good work, Andrea. Bob]

First notebook entry: Introducing myself

I'm learning English because, I want to know people from differente countries and share and spend time talking with people.
My native language is Spanish and I grew up In Colombia

Suggested Correction:

Hello, my name is Andrea. I grew up in the city of Medellin in Columbia. My native language is Spanish. I'm learning English because I want to know, share and spend time talking with people from different countries.

First notebook entry: Introducing myself

I'm learning English because I want to know people from differente countries and share and spend time talking with people.
My native language is Spanish, and I grew up in Colombia.