I promised you correction and review, so here you go. It's big, but keep in mind none of these are grammatical errors. Everything is about style and the meaning you wish to convey. This is the fine-tooth comb. The finest. I mean if you had written it like that, you would be in the 95-th percentile (at least) if there was a nation-wide test. And I would have been in awe. As it stands now, you're not _that_ good, but for a foreigner who's studied the language for a rather short time, you are doing extremely well.

През лятото ходих в Синиморец. Там беше хубаво. След морето ходих в Будапеща. Приятелката ми Р. също беше там. През юли ходихме в Сърбия, Черна Гора, Албания, Македония, Косово и България. През август си бях вкъщи с майка ми, баща ми, сестра ми, брат ми и приятелката му. Ядох много. Майка ми и баща ми са най-добрите готвачи. В къщата ни е много топло през лятото, но имаме басейн. Плувах всеки ден. След седмица отидох във Вашингтон. Видях много свои приятели!! Останах там за седмица и се прибрах вкъщи. Моя приятелка се омъжваше. След това бях в Уола Уола още 10 дни и в края на август се върнах в София.

So. I removed all the "аз"s and "ние"s and decapitalized the months and season. Here are the other corrections and the reasons behind them:
* Моята преятелка Р. -&gt; приятелката ми Р. - this is shorter and more common. Typo - it's прИятелка. This time there's no confusion between friend/girlfriend, since you've given the initial. Well done :)
* "там" instead of the second "Будапеща" - It's best to keep repetition to a minimum.
* Typos - it's МакЕдония and КосоВо (I know where the ж came from :))
* През август аз бях вкъщи -&gt; През август си бях вкъщи - "Аз" isn't needed. I added the "си" which is not necessary but common, as it conveys that you like your home and you like eing there. Without the "си" it would be more formal.
* Typos - баща ме, брат ме -&gt; баща ми, брат ми.
* в моята къща -&gt; в къщата ми -&gt; в къщата ни - The first change is for shortness, the second is because "къщата ми" implies you are the actual owner while "къщата ни" means your it's your family's (including yours).
* След една седмица -&gt; След седмица - you don't need "една". The noun being in the singular is enough.
* ходих -&gt; отидох - the first means you visited and came back, but since later on you say how long your stay was and part of what you did there (met friends), it is better to use "отидох" which means you went, but carries no indication of when or whether you came back.
* Видях много приятели -&gt; Видях много свои приятели - this is to clarify that these are your friends and not just friends with each other.
* След още една седмица -&gt; Останах там за седмица - Here "една" would be OK, because "още една" is a common phrase. However, this expression would be more apropriate in a case where you visited two cities, both trips originating from Walla Walla: След седмица ходих до Вашингтон, върнах се и след още една седмица отидох в Чикаго. So it's better to say "Останах там за седмица и..." - I stayed there for a week and...
* Моята приятелка -&gt; Моя приятелка - It's "the friend" vs "a friend". "Моята" is too specific and means you are refering either to R. whom you mentioned before, or a girlfriend. If it's R, you should just say "R." and if it's another friend, it should be "моя" - "a friend".
* женеше -&gt; омъжваше - in Bulgarian there are two words for "marry". If you are marrying a woman, it's "женя се". If you are marrying a man, it's "омъжвам се". I'm assuming that's the case with your friend.
* Уола Уола - I think that's the proper way to spell it in Bulgarian. Wal -&gt; Уол. Like in Walter - Уолтър or Cornwall - Корнуол. Though most Bulgarians don't know there are rules about that.
* още 10 - it's better with "още" because you were there before, for a week (before Wahsington)
* дойдох в София -&gt; се върнах в София - since you've been here before and you are spending most of your time here, it's better to say "се върнах". Or you could say "си дойдох", if you feel like home here. (that informal "си" I mentioned above)



I would also like to point out some of the things you got very right. Unlike a lot of Bulgarians.
+ You used "ходих в" and not "ходих до". The secound would mean you went there, bought a pound of tomatoes and came back.
+ Placing "през лятото" where you did. If it was in the beginning of the sentence, there would be ambiguity whether it's hot during the summer, or you only have a pool in the summer.
+ You know how to move the "се" in "женя се" vs "тя се жени"
+ Although "след една седмица" wasn't very right here, it's a good example of how you are making an excellent transition from English to Bulgarian. You know it's "eднa", not "един" седмица, so you've gotten the hang of that. And more importantly, while you still use English structures sometimes, you are able to express ideas in Bulgarian in a correct and understandable way.
So frankly, I think you're doing a helluva good job learning Bulgarian.