Basicly you need to start at the farthest wheel from the Master Cylinder because this is a rear wheel vehicle it should be set up with a front rear split system, most front drive have a diagonally split system (front righ, and rear left on same circuit). Anyway start with the LR then RR then LF then RF
Make sure that the Master reservoir is full of fluid and the cap is on.
Have a helper "pump up" the brake pedal a few times and hold it down. while the pedal is down open the bleeder slightly to allow a stream of fluid to exit. Watch for the spitts of air. Shut of the bleeder as soon as you notice the stream start to decrease. Repeat this proccess at each wheel until no more air is seen when bleeding.
That is how I bleed brakes at work.
PS. If you dont feel comfortable doing this dont hesitate to get help from a knowledgable, prefferably certified technician.
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(Sold)1989 Chevy Thomas 8.2 Detroit Allison AT545 Custom 3rd door added in back.
GM Service Tech