天黑了的时候犯错误

I am not sure what 质量 means here. If you can provide its English meaning I might be able to help to make it better.

Answers:

在实践中运用到知识更有益于记忆。[实践, put in practice; 运用, to use. For me they look very similar and I might even be able to switch them in this sentence. Being in the middle of applying ... has more benefits for remembering. HELP, I really need help with a grammar breakdown on this one]

There are two parts in this sentence. first one is 在实践中运用到知识，which is also a short sentence but omitted the subject 我们. It should be 我们在实践中运用到知识. 在实践中 is "in practicing". 运用到知识 use the knowledge. 在实践中运用到的知识 the whole sentence is the Subject of the main sentence. 更 is more and it is an adverb to strengthen the verb. 有益于 is benefit to, which is the verb of the main sentence. 记忆is the object of the main sentence.

而且我经常只背诵学到的知识，[学到的知道, studied knowledge] 可是单独背诵还是比不没背诵更好些。[更好些, a little better (?). Here I don't understand the usage of 还是]

again knowledge is 知识。更好些 a little better. 更好is grammatically right. Adding 些made you sound like more Chinese. We Chinese people like to add words like this to make people think you are friendly. For example, if a Chinese friend asks you, " I bought two shirts, which one is better. white or blue. ?" You may answer 白色的更好。That's fine. But if you answer 更好些 it means you like the white one better but the blue one is not bad too.

还是is like Still. It is emphasizing the fact that you like one comparing to the other.  eg. 我知道猫很好，我还是喜欢狗。I know cats are good, I still like dogs. 就算他有点奇怪，我还是喜欢他。Even if he is a little weird, I still like him. 虽然我的工资很高，我还是不想上班。Although I have a high salary, I still don't want to go to work.

Hope this helps.

Correction and Answers:

我文本下会概括讹错误。请纠正错误或者你觉得我应该补充一些内容加某事。 =)

1.看窗帘背后发现天黑了。[背后 is more suitable for behind/other side]

Yes. 背后，后面both are fine. If you use 反面， it means you are looking at the other side of the curtain but not what is behind the curtain.

2.今天的种以前，[I am trying to say before today has finished. Perhaps I could use 夜晚以前] 以前，我会把... [Is this refering to before the previous sentence or before current sentence?]

夜晚以前 is grammatically correct. but we Chinese dont say it that way. We say 天黑以前，OR 一天结束以前 which is more formal.

3.我会把生词和新的语法要放记在记事本上。[Auxiliary verbs can/should come before ba-structure. 记 is a more suitable verb since I am recording something in the notebook. 记事本上 (上) since I am leaving something on the notebook (i.e. text). When one should use 上 is a bit fussy but I guess it becomes clearer with frequent usage]

RIGHT, you can say 我会把生词记在记事本上，OR 记在记事本里面。You can also say I put my pen on top of the notebook 我把笔放在记事本上面。People will understand based on the context.

4. 我会放些质量的部分可是质量的所有没有办法用。[Whole sentence completely wrong and unreadable although I've learned not to write like that - thanks!] :P

5.如果上课的时候能应用到这部分知识，就会产生联系。[When attending class + and being able to apply this (class) material + then connections will be brought about.] [In this sentence I am confused about the usage of 到 and 知道. Can both be omitted without changing the meaning of the sentence?]

知道 is not 知识。知道is a verb.我知道这不是真的 I know it is not true. 我知道他不开心 I know that he is unhappy. 我知道我错了 I know I was wrong.

知识is a noun. means knowledge. 我学到的知识很有用。The knowledge that I learned was really useful.

到 sometimes is a preposition. It is often used as an adverb but sometimes as a verb too, it's hard to explain or give it a definition. You have to read the sentence. 我把菜放到篮子里 I put the vegetables into the basket. 他学习到深夜 he studied until midnight. 我到了 I arrived.

到can be omitted here which people would still understand but it is not good Chinese to some people :-P.

Unless you made it really clear in the context, 知识 here is the object of the sentence so it can not be omitted.

6.上课和联系的记忆比上课和没联系的记忆更好 [Malignant usage when trying to compare compared things.] :'( Continuing in following comment...