Some suggestions: 

My first entry

Hello to everybody:

My name is Luis. I'm Spanish. I have a B1 level (pre-intermediate) (in English?) and I'm looking for a native English friend speaker who wants to be my friend to speal have a language exchange 2 times a week. If I don't find to anyone who wants to speak with me I'll look for a teacher (not very expensive).

This is my first entry. I have never written in English on the internet. For my entries, I am not going to focus on grammar or vocabulary. I'm going to improvise for to improve my answer response time for speaking or writing. How Since it is my first day today, I'm going to speak about my family and me. Well, there here I go:

My more closed immediate family is composed by of several people. I have a parents and we are 4 siblings: 2 brothers and 2 sisters. I am the second sibling by born birth. All of my siblings got are married except my little brother. He is a bohemian person. He have has no intention to of getting married.

I am an uncle to of 2 nephews and 1 niece. They are already very child.(I'm not sure what you mean by this sentence.) I'm the godfather of one of them, the older (oldest?), called Rafa.

I got married 5 years ago to my beautiful wife, called Rosario. She is very diligent and thanks to her I became to be more organized than I was.

By my 2 sisters, I have 2 brothers-in-law. By my wife I only have a brother-in-law and his wife. They have 2 children who are my nephews too. Lastly, but not less important, I have a father and a mother-in-law. They are more simpathely and I have to they a lot of regard. (I'm not sure what you mean by this sentence.)

Oh, I forget, I have an aunt by marriage to my mother's brother, married with my uncle by my mother, and another aunt and a uncle, both married with their respectives wife and husband, and several cousins.

That's all, I hope anybody someone could will/can read and correct this horrible text. Bye, bye.