90k student debt
broke ass credit
1. How do I pay these off most effectively?
2. I need to make secondary income apart from my job, any ideas?
3. How do I improve my credit score quickly?
Get rid of your car. If you don't have public transit where you live, move closer to your work and walk.
Check all your bills and remove any extras from your services whether you want them or not. Call your internet/cable/cell phone/whatever providers and ask them for help lowering the bill.
If you have cable, best to get rid of it unless you have a good tv/internet/phone bundle.
Review everything you have a monthly subscription for, e.g. websites, iShit, Spotify, and cancel all of them, or as many as you possibly can.
Track the amounts you're now saving from each of the above. Apply the total amount to your loan every month.
If you put your head down and just suck it up for a while you can have it all paid off in a reasonable amount of time.
Then the hard part really starts: once you get out of debt, start saving rather than spending all that surplus money you will suddenly have. Ideally, because everyone needs a reward for their efforts, you'd pay yourself a predetermined percentage of the surplus and the rest would go to savings, 20% of your total income is said to be a good amount.
The advice about the credit card is good if you are sure to pay it in full each month. Don't do it if you might not resist to spend money you don't have.