What examples of good side jobs are there that will guarantee extra money? It's because I'm still living with my Mum and it's stressing me out because I highly crave independence and I want to move out. I know all the basics like how to cook, maintain house, and so on. I already have a job for which I get paid once a month but I know that something like stripping as a side job is not the answer even if it's a quick and easy way to earn lots of money.

Now that is the Ultimate Question that we're all seeking.
Fail illegal and immoral, your pretty stuck.

Anything that you can fit into your working schedule and make a reasonable income will do. See what options you have locally for part time help.

Anything that pays money. When you don't make a lot at your main job....you don't get to be too picky. As long as it fits your schedule.

And there are a lot of other "easy money" schemes you don't want to do for a number of reasons. Moral and legal...or just negative repercussions they will have with future employers that would disqualify you.