i'm new... few concerning noises

[92SVXLS-LDC]

hi guys! i just bought an svx yesterday... i love it so far, and i've owned some neat cars in the past... acura legend, audi 80 quattro, saab 9000cse, and now my svx... i'm only 18, so i think i have a good start... theres a few noises that concern me... you forum guys know so much, so i'm wondering if you could maybe help me...

sometimes as soon as i start my car i hear a little squealing sound and it usually goes away within a few minutes... that one doesnt bother me so much....

when i'm in gear and i accelerate (normally between 1k and 2k rpms) i hear a metallic either vibrating or grinding noise... that one scares me, and it didnt do it when i test drove the car... it goes away as soon as i'm out of 2k rpm though...

and finally when i'm turning and accelerating hard i feel/hear pops in the front end... ball joints? i dunno

i got the car for pretty cheap expecting to do some repairs, but does this raise any HUGE flags to you guys?? and any help is greatly appreciated