I have internet, and it works good. But I had somehow managaged to go into the computer and change the password to the wifi and I have no idea what the password is, how to find it and how to fix it myself. Is there anyway I can get my wifi back? Please help. Stranded is strandlenavia.

Not really... your option is to reset the router... and create a new password and change all the other machines... only write this one down someplace safe.