Is everyone able to edit posts, or is that a privelege given to you when you have reached a certain number of posts?
I believe everyone can edit their posts right off the bat. Edit option is available to members for upto 24 hours after making the original post. After that, only a moderator can edit any post(s).
how do i delete my post since it doesnt apply anymore?
Please speak to the moderator of the concerned sub-forum. It is done at the moderators' discretion.