I won't make you follow these, so I won't ban you if you don't follow (with the exception of 4.), but it's a good idea to follow these simple guidelines:

1. Please post in proper English. That means, please try to use capital letters when starting a new sentence, use proper punctuation, spelling and grammar. If your English skills aren't that good, it's alright, but if you're a fluent English speaker and you use language like 'ZOMG LYKE TOTLY M8 HI2U BBL TTYL', that's just annoying.

2. Please read the topic before you post in it. That seems like common sense, but I guess it isn't?

3. Please try to research a bit before posting. Again, I don't want to discourage you from posting, no. But some things are common knowledge and using a simple Google search might answer your question. 

4. Please do not spam. We will not listen to you more if you post the same question three times. It's just annoying and if you repeat it, we will ban you. This applies to IRC as well -- spamming 100 lines of 'AAAAAAA' is annoying.