Please, before typing as fast as you can and "vomiting" your idea onto the thread, review what you have just written and make sure that it is legible and makes sense. Also, be sure to search before starting a new thread.
These are great suggestions but I would back up a bit and give more general advice:
Give more than you take.
Poor writing is one way of taking from our readers. Asking a question that has been recently adressed (i.e. not searching) takes from our members but doesn't give much back. This isn't to say questions are bad, questions are great if the answer informs many members.
First hand direct experience based information is great whereas second hand info can lead to disinformation and rumor.
So if you are going to post, consider who will benefit from what you are going to say? If it is only one person, send a PM.
I am aware that this perspective favors older members: They have a better sense of what has been posted before, and what information will interest other members.
New members are usually eager to jump in and participate in the community, and often this leads them into predictable mistakes (one of my early posts was a bump).
My advice if you are new? Read more. Take the time to read back in the forum, it is worth it! This doesn't mean your participation is not welcome, it just means your contributions will likely be better the more you have read.
We have a great and friendly community, and this is based on the value our members give to each other.
So that is the pitch: Give more than you take and the community thrives.