My last weekend

Last weekend I did a lot of things (I was busy last weekend).
Friday I had a birthday party of a university's classmate (I attended a classmate's birthday party on Friday). We had a very good time. We have being in a park taking dinner were in a park having dinner, talking and laughing. Then I went to a pub with other friends and we have been driking drank beer until 2 a.m.
The next day, Saturday, I'd been studying. I was studying at in the morning, I had lunch with my family and in the evening I'd I had dinner in a friend's house because we have been saying her we were saying goodbye to her, because she is going to study in another country. Then all of us go went out to a party all together.
Finally, the (on) Sunday, I get up woke up later than usual/I woke up late because I was very tired, but at in the afternoon I was in at a surprise birthday party of a close friend (at a close friend's surprise party), it was very funny (it was fun/I had a good time) and I met new people.

My last weekend

Last weekend I did a lot of things.
Friday I had went to (attended) a birthday party of a university classmate. We had a very good time.  We have being were (estuvimos) in a park taking having (eating) dinner, talking and laughing. Then I went to a pub with some other friends and we have been driking drank (bebimos) beer until 2 a.m
The next day, Saturday, I'd been studied I was studying at I studied in the morning, I had lunch with my family, and in the evening I'd I had dinner in at a friend's house because we have been were saying her goodbye to her, because she is going to study in another country. Then we go went out to a party all together.
Finally, the on Sunday, I get got (pasado) up later because I was very tired, but at in the afternoon I was in a surprise birthday party of a close friend.  It was very funny a lot of fun and I met new people.

it was funny = chistoso  vs

it was fun = divertido