(I'm going to separate this into sentences so I can leave comments in an organized way.)

学习中文。

我明年会去那里中国工作。(You need to specify where you're going to work, not just "there.") 

和我想我会喜欢中国。("And" is not used this way in Chinese, so please start a new sentence and remove the word. Are you trying to say you'll like China, or you'll like your new job? Again, you need to specify.)

我对学习中文有兴趣, 但是中文的发音可以难。(我对 literally means "I'm correct," but in when used as an introductory clause, it means "for me." While the character 趣 is defined as "interesting," because you're saying "have interest," you must say 有兴趣. "But" is 但是 or 可是. 发音 means "to pronounce sounds"; once more, it's needed to indicate you find specifically pronouncing sounds difficult and not just sounds in general.)

我希望以这个网站会帮助我。(In Chinese, we say "I hope this site will help me" instead of "I hope through this site there will be help.")

学习中文。

I think you want to say this

Studying Chinese

I am (now) studying Chinese. I will go there (China) next year to work, and I think that I will like it (China). Studying Chinese can be interesting, but the tones in Chinese can be difficult. I hope that using this website will help me (learn Chinese). 

If this is what you want to say, then you should write something like this:

 學習中文 

我現在在學中文！我明年將要去中國工作，估計/猜我會喜歡中國。中文很難學，尤其是中文的聲調，但與此同時中文學起來也很有意思。我希望用italki會有助於我的學習。

This literally says 

Studying Chinese 

I am now studying Chinese. I will go to China to work next year, (and) I expect/guess/reckon I will like China. Chinese is (a) hard (language), but (at the same time) it is also really interesting. I hope that using iTalki will be beneficial to my studies. 

Some notes:

和 is not used like we use "and" in English. 和 is only used between two nouns, it is not liked to link two clauses together. This is a good video on how not use 和 wrongly https://www.youtube.com/watch?v=-CzrHisGZGc

它 is almost never used in Chinese. Instead, you often repeat the noun. For example 我喜歡蘋果，蘋果很好吃 lit. I like apples, apples are very tasty, Although strange in English, this is natural in Chinese. 

The tones in Chinese are called 聲調, or they can also be referred to as 四聲 lit. four tones 

Not a bad effort! Keep up the good work. I would recommend writing an English translation along with your texts as this way Chinese people will be better able to help you. 

Laurence 

学习中文。