I'm assuming you mean guidelines to the forum?
If so, you can find out where things
fit, and the general guidelines to the forum here:
https://bitcointalk.org/index.php?topic=703657.0
Generally, sticky posts will help you whenever your in a certain board. The Meta board has plenty of stickies to help you familiarise yourself wit the forum. I wouldn't worry about making mistakes though, moderators can solve most of your problems, but I appreciate your willingness to adhere to the etiquette around here!