Hello from NJ/PA
Anyway, welcome to club here. There's a few things in order to check.
First, try lubricating the belt. Belt cleaner is about $8 at your local auto shop. Just turn on the car, and spray it right onto the belt moderately. No need to overdo it.
After that, look at the motor while someone else starts it. Identify where the squeak is coming from and then compare it to your belt routing diagram (search google). The two biggest things it will be is your a/c condenser and the alternator. The easiest thing is to shut off the A/C and restart the car. Does it make that sound again? If not, the clutch has gone bad in the a/c condensor. Replace it with a NEW one
or have it professionally done. If it's the alternator, you'll hear a metal grinding noise. Swapping the alt is simple enough.