this weekend has been really boring for me, I haven't been able to enjoy it, cause in my english class I came up with the brilliant ideas the brilliant idea

"The" points to a specific thing but a plural 's' doesn't so they contradict each other and they just sound weird together.

of doing exposition about different topics to practice english, I do not don't

"I do not like..." It's correct but always use contractions "don't" "won't" etc. it's much more natural.

like just listening to my teacher speaking speak

[verb]-ing to verb [dictionary form without the "to"] 

example: He's watching movies to practice English.

He likes to watch movies to practice his English 

and me participating just sometimes. That is why I complained  complain

Verbs after "that is why" should always be present tense, because of the verb since "is" is in the present tense

If you want to say "complained" you have to say "that was why" 

>> That is why I complain. (present/continued)

That is why I complained. (past/a one time thing)

I told the cordinator coordinator that it would be a good idea to do something to practice what we already know, for example like

"For example" means you're going to explain something, go into more detail 

"like" just shows examples, NOT explaining, and since you didn't explain here in this sentence it should be "like"

She eats food like carrots, celery and chicken.

vs. 

She eats better to be more healthy. For example, she eats carrots, celery and chicken.

the grammar and the vocabulary, fortunately the cordinator took my resques on count. everyone in my class was complaining cause my plan came of everyone in my class is suposed to do what I said, at the begin all of them were arguing saying that won't do that and also that it was not such a good idea we had a long argument about it, and guess what I won that one. as soon as my classamtes knew that most of them started looking at me badly, I earned a lot of enemies. to finish this our firts exposition is going to star tomorrow. the teacher asigned 5 topics to talk about that is why my weekend has been boring, I have to study a lot and I do not like it, although I want to learn english that so much for us, I feel a litle regret for what I did.

Sorry I don't have time to correct the rest! :((

It's a long entry..