Congrates on going the DIY route. Suggest picking up a low cost Haynes shop manual on this car.
Both noises are normal for a loose belt and perhaps glazed belt and pulley. When you change the belts check the pulleys, if it glazed use sand paper to remove it.
The PS issue is again the result of a loose belt or glazed belt and pulley. If the PS fluid is dark you can change it completely over time by removing the old fluid using something like a turkey baster and refilling with new. Change the fluid a number of times between driving until it is clean again. Use Dexron III or whatever is its new replacement.
The trans can also be drained and refilled 3-4 times between drives or until it is clean again. The trans pan holds about 1/3 of the total amount in the trans, the rest is in the torque converter.
Check past TN post for info on other ways of changing the fluid such as disconnecting the fluid return line from the cooler, etc.
Fix the belt issues before getting into the AC issues.
The AutoZone website at
www.autozone.com has a good self help repair sectiion that can help with this cars fender and belt replacement.