For your main: Everything you need to know is located here, and the social thread is located here.
Here are some intro steps to maximize your time here on the site:
There are two main rules on the site: Use the search button before making a thread & following the global rules. You can find the global rules here. Following that, I would recommend doing the following:
In order to learn how to post, be sure to go to how to write a good thread.
From there, you can head to the tutorial guide and watch some more vids on how to get acclimatized to the boards.
Afterwards, read the beginner's handbook.
From there, go to your respective region zone and introduce yourself there--you can also find out about tourneys going on in your area.
You may notice that some people have their names in certain colors. Well, that is explained below:
This color shows someone who is a Back Roomer. You can be one only by invite only.
This color shows someone who is a Pokemon Researcher. If you have a large knowledge of Pokemon (perhaps you played it on a professional level for instance), this is the place for you. This group is invite only.
This color shows a Back Roomer for Brawl. An invite only squad, these people help to contribute to many an aspect of Brawl.
This color is the default color for regular Joe Schmos on the boards & also is for the Melee Back Roomers. It is the exact same as a Brawl Broomer, only with Melee
This color shows you are a Smash Researcher. If you study frame rates the way Chris Collinsworth studies tape in the NFL, then you may have a shot to get in. This too is invite only.
This color shows you are a tournament director. You can get into this group by successfully running a tournament.
This color shows you are a smash debater. If you like to debate, this is for you. For information on how to become one, click here.
This color shows you are a Premium Member on the site. For information on this, click here
This color shows that you got pranked by a premium member. This can be applied to any member provided they are not a staff member.
This color shows that you are a (competent) Smash Writer. For more information, click here here.
This color shows that you are a Moderator, Super Moderator, and Senator. Mods look over a certain aspect of the site, Super Mods go a step further beyond that, and Senators are a step away from being the next category iirc...
This color means you are a true brass of SWF: an Administrator. They are the ones in charge of keeping maintenace of the site and such. Don't even bother applying for this. .
You can also play games, talk about games, talk about PCs, talk about the arts, or talk about anything really!
If you want to play Brawl online, go here and follow the directions on the original post (OP). If you want to complain about wifi, go to Online discussion. If you want to complain about anyone or anything else, go to forum support (but use this sparingly though. )