Obviously you can just make another profile, but that could get you in trouble (but you know that). I think you just have to ask a mod and then there are probably restrictions on your alternate profile (like no posting in the forums with them).
I can't remember the thread, but there were a few steps: 1.) Contact a Mod (I think). 2.) Put all the alternate account names you have in your main accounts profile. 3.) No forum posting with alternate accounts.
But this was for "Ghost of..." accounts so I don't know about just a plain alternate account.
How to make an alt account. Go to "Sign in", make an account. Link from your main to your alt and from your alt to your main. If it is a game-account, do no use it for other than that, otherwise there will be trouble. If it is not, know that using the account if you are banned will prolong your ban and earn the alt a 7 day ban or more. This counts even if you just log in to go "Sorry, I am banned".
But most importantly: Why oh why do people think making alts is a good idea. You spread out your ap intake, it is still the same person making the posts as you are not allowed to use the account to deceive other users, and if you break the rules, it will hit your main account as well, and earn a good deal of trouble. So my advice would be to not make an alt, because it is really annoying.
That's the part I need help with :/ Where will I get it from? As in, is there a special thing I have to do on my PC to create a second? I appreciate your help a lot by the way.
You're not familiar with online email services, I guess? Using an email program installed on your computer? It's pretty easy to google for sites that will let you sign up for an email, and if you only need it for account creation it won't really matter which one you choose.