Пожалуйста, пишите часто и много. Это типа учитель говорит первоклашкам! :D

Darn it, I made mistakes in my correction. Oh, well, there's another good one.

You have very good Russian!

Actually I had difficulties correcting this, because I was not always sure what you meant at some spots. Here's how I understand this: We're on a vacation now and in the mornings we sit(are) at home.\\*"сидеть дома утром" is an infinitive and is equal to "to sit at home in the morning"*\\ We have a breakfast, read a newspaper or a magazine and then my brother and I usually go for a walk to the park.\\*here I just corrected to the more suitable form.*\\ I have a young sister and I love her. She is a kind and nice girl, and everybody loves her. *I forgot in the correction. I actually wanted to place "Иногда мы с сестрой ходим в библиотеку." here, because it was kinda weird that you first say what you usually do with her and only then introduce her. But the sentence itself was correct."* She is a good student, too, and she is always prepared for the lesson.\\*Verbatim what your wrote here is "and she always knows the lesson" which might be correct in English probably, but not in Russian.*\\ My brother, sister and I often have our supper in restaurant. Then we go to a movie theater or to a concert. Sometimes we go a theater in the daytime, and to a concert in the evening. Today we go to the theater, because "Hamlet" is in the schedule and we all like Shakespeare. I got\\*you missed that Russian "got" here, which is "есть"*\\. your last address, but I don't think we are still in Caucasus. \\*I couldn't understand what was that about? So I left it how it was.*\\ Thank you so much for the book. You're a kind girl, and I love you. Could you please write more often and just more. Best wishes.\\*You used "с приветом" here, which usually and idiomatically means "crazy", "insane". So I replaced it with a better one.*\\ Is it close to the original?