I'm going to write about what happened today related to my English.

As everybody knows, there are several areas in which to improve your skills, for instance, listening, writing, reading, and speaking, but I used to be lost because of the fact that there is a huge offering on the internet.

I'm not sure when I started to learn English, maybe in the middle of the nineties, but at the end of last year I faced up to my problems.  I found a famous system, but I didn't take into account the area of listening and I only focused on the written part. so I started to copy expressions one by one and by Xmas time I had already learned over four-hundred expression in English.  I mean, 400 short sentences from the beginner level to the upper one.

So far this January, I realized that I can’t used them in a normal conversation.  As a consequence of that (1) I stopped studying these sentences to find postcard from BBC.  Firstly, I listen to the postcard, then I read the transcription, and after that I look up the words which are new for me in order to find out their meanings.  I eventually try to introduce this knowledge into my active English.

This summer I realized that I have worked on my listening and reading skills, but I have completely forgotten (better: neglected) my speaking and writing skills. So I asked to enter in the EOI. near my house, and I will take classes with a teacher in this place to reinforced my speaking ability.
and Yesterday I remembered that I have an old book to make compositions.  It has 53 tasks (better: exercises) and I need to go the extra mile to write down all of them down. due to I'm a bit lazy, but that's ok because thanks to this great website and people like you who are checking my work (2) and teaching me where I make mistakes, I will improve my written skills.

I'm going to attach the task in an attachment file (I'm sorry it is in Spanish). and then I'll do my homework.
Thanks in advance (or just: I appreciate) your efforts to check my writing.

1) This is gramatically correct, but it would sound a little more natural as "Due to this ..."

2) The difference between job and work is often confusing, but the correct word is work here because it's an uncountable noun.