Punctuations

Sometimes I forget to add punctuation or do not use it properly when I write. I did not think this was a big thing until I discovered the following jingle:

我知道你不知道我知道你不知道我知道你不知道

My teacher told me that this sentence will take on a different meanings depending on what puncuation you use. What do you think?

Taking Aerobics

I found Zhen Duoyan's aerobics by a casual view at an online forum. A writter posted an essay at the online forum to say that she had been taking Zhen Duoyan's aerobics for two months and it lead to her losing 4 kilograms plus became stronger than before. I want to build my body up and reduce my belly fat, so I'd like to try it.
I started practicing aerobics last Monday. I am following a video of aerobics on the Internet to study and it is free. The lession is fourty minutes long. At beganning the rhythm is slow and the action is simple, but then it becomes more and more difficult further into the exercise and I almost can’t finish the whole program. When I'm done, I'm covered in sweat. I enjoy that feeling and I always {sleep well}? at night after a day that includes a good workout.

Even thought I felt pain all over my body for the first few days, now I can feel that my whole body is very relaxed. I hope I can keep it up everyday to become physically fit and also reduce my belly fat.

Breakfast at Tiffany's

Hello! I am Vanessa and I am learning English and Cantonese. I have been learning English for a while, and {also studying?} Cantonese, I am just a beginner and I have no idea what I write about in my first italki-writing. I will write something about the novel I just read last weekend, Breakfast at Tiffany's. I think that I am lucky because I haven't watched the movie before reading the novel. Due to this, I can build images of the novel's characters in my imagination rather than just remembering the images of the actresses and actors. I love the story in the book and I have really been moved by the part where the woman threw her cat but regretted it immediately. That reminds me of my dog. 

I am not good at writing, especially on the details. I hope you can help me and correct my writing. :)

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There you go, hope that helps!

That's a good idea tgif, 谢谢

I'm still new to learning Mandarin (it's only been 2 weeks since I started) but I have enjoyed studying zhuyin after learning about it in this article - <a href="http://chinesehacks.com/study/learning-chinese-pinyin-or-zhuyin/">http://chinesehacks.com/study/learning-chinese-pinyin-or-zhuyin/</a>

Since there are new sounds in Mandarin I like the idea of associating those new sounds with their own characters instead of assigning multiple meanings to the english characters I'm so used to. I'll have to learn both anyways, but I'm up for the challenge. I can already type in zhuyin or pinyin on my phone and my laptop with keyboard drivers I found for both as well.