I think, it was written pronounced of english by korean. Umm...like, you write pronounced of korean by english. For example, the word 'Korea' is meaning of '한국' and the word '한국' is written pronounced of korean by english, 'hankook'. got it? So...I will write those sentences by english, as hard as i can. and if I can't interpret, I will express '@' 오 예~~ 라이크....음......재크? → Oh yeah~~ like umm...Jeak? 무슨 곤충같은 이름같으니 → Like insect's name 오!!!!! 개스 왓!! (ㅋㅋ 개스. 풋) → Oh!! guess what!! (kk guess. k) 아이 앰 개팅 마이 폰.....인 투 데이즈!!!! >.<; 푸하하하하하핫!!! → I am getting my phone in two days. haha!! 흠.......*Z-연이 완전 흐뭇함. ㅋㅋㅋ* → Humm... *Z-연이 is very delighted. 온 썬데이, 아이 앰 고잉 투 겟 마이 폰, → On Sunday, I am going to get my phone, 앤드 메이비 마이 수윔수트. ㅋㅋㅋ → and maybe my swimsuit. kkk 유 노우.....비키니? 아이 돈 노우, → You know bikini? I don' know, 벗 아이 앰 씩 → But I am sick (푸하하하하하하하하하하하하!!! 야~ 짱이데, 이거? 씩...크하!!!) → (hahahahah wow~great, this? sick...kkhaha!!) 어브 원피스 수윔수트;;;;;;;; → of one-piece swimsuit;;; 하하하하 벗 마이 맘 이즈 비잉 어 비치 라이트 나우 → haha But my mom is being a @ @ now 앤드 이즈 트레트닝 미 (.....?!) → and is @ me (...?!) 윗 퍼브릭 스쿨. ㅠㅠ 무슨.....고통 체임버??? -,- → What public school.ㅠㅠ What....pain chamber???-,- 쉐 이즈 새잉 댓 → She is saying that 이프 아임 앰 낫 씨리어스 어바웃 스쿨 → if I am not serious about school (;;;;;;라이트, 커즈 아이 브링 배드 리포트 카드......노우!!!!! grr....) → (;;;;;;right, cause I bring bad report card......no!!!! gee....) 쉐 웰 테이크 미 아웃 어브 스무. WTF????? → She will take me out of @. WTF????? 쉬 이즈 어 머더퍼킹 애스홀, 아이 노우. -.-;;;;;;;;;;;; → She is a @ @, I know. -.-;;;;;;;;;; 애니 웨이즈, 아이 러부유 소우소우 마치, 앤드 콜 미 베이브!!!! ^^ → Anyway, I love you so much, and call me baby!!!^^ &lt;3 ~매씨~ → ~@~ (아이씨..................ㅠㅠ 이름이 이게 뭐냐궁~~?????!!!!! → (@..........ㅠㅠ what is this name~??!! ㄱ- 뭐야, 무슨....바퀴벌레같은 소리.....-,-) → ㄱ- what, what....sound like cockroach....-,-)

Add about my first answer... Overall, a lot of wrong grammar sentences. then, what I what I think this letter(?)'s contents are... On Sunday she will get her phone and swimsuit. She is boring about one-piece swimsuit. (I think, she expressed meaning of bored as 'sick'.) She had disagreement with her mother about public school. And,, I was little upset about her who wrote this letter. because she used swear word. ‘머더퍼킹 애스홀’ means fuck!! and ‘아이씨’ means damn!! I think she expressed frustration about her mother. Terrible!!! I personally hate it... Ah!! Do you know what means WTF? Let me know if you know. I hope my answer helps to you. Thank you.

Your friend was correctly interpreted. it means "here too"

나 사실 샤이니도 실제로 봤는데ㅋ -> I actually '샤이니' actually saw. In this sentence, '샤이니' is 'SHINee' who men's group of Korea. and, '실제로' mean, saw them directly without going through the Internet or TV. for example, saw at concerts, etc. and, 'ㅋ'mean, just, smiling expression at sentence, like 'k'

Humm....I think "I will write to you." and "I will text you." have same meaning. Then..."I will write to you." in Korean.."내가 당신에게 편지를 쓰겠습니다." or "내가 당신에게 편지를 하겠습니다." If, you reply to a letter, "내가 당신에게 답장을 하겠습니다." '답장' means 'reply'. I hope my answer helps to you. Thank you.

Add about my first answer... First, by default, when you creating a interrogative sentence in Korean, the question mark is added at last of the sentence. And, '-요' form is more polite significance at the Korean interrogative sentence. One thing during very big difference between Korean and English is that. The Korean sentence has levels of honor, similar politeness. For example, I'll explain. Here is the sentence. <"그는 그곳에 있나요?"> It means, "Is he in there?" When you are in 'situation (1)' (situation (1) : you are communication with somebody and you and somebody are equal status), you can use this form of sentence, "그는 그곳에 있니?" or "그는 그곳에 있어?" When you are in 'situation (2)' (situation (2) : more polite situation than 'situation (1)', for example, when you ask to somebody and somebody is older than you or have higher status than you), you should use this form of sentence, "그는 그곳에 있나요?" or "그는 그곳에 있어요?" In 'situation (2)', these two sentences are same levels. When you are in 'situation (3)' (situation (3) : when you ask somebody, and the somebody has very higher status or the communication at the best high situation, for example, you ask to your CEO or boss of your company, etc...), you use this form of sentence, "그는 그곳에 있습니까?" may be better question. Because the form of sentence "그는 그곳에 있습니까?" is more polite than "그는 그곳에 있나요?" or "그는 그곳에 있어요?" Ultimately, the sentences "그는 그곳에 있나요?" or "그는 그곳에 있어요?" and "그는 그곳에 있습니까?" have little difference. Just, degree of politeness. Your question is little grammatical question. I answered based on what I've learned. So, my answer is can not be correct. And, I don't know my answer to your question is appropriate. But, I tried effort, exceedingly. I hope my answer helps to you. Thank you.