squeaking blazer please help

i have a 96 blazer and its a squeakin. i put it in reverse to back out and nothing, put it in drive and at about 10 to 15 mph it starts to squeak, sound like from the front, i hit the brakes and it stops until i let off them. also it stops after i turn a few times (4 or 5) but will start up again in a few minutes
ive been told its so many thing by so many people idk were to start

thanks

Remove the belt and inspect each pulley for signs of a bad bearing(gritty rotation or play). Also try to replace your tensioner.