replace a pressure hose

If you can get to the pressure hose that needs replacement-w/o a problem remove and replace-If not you might have to remove the power steering pump to get more access

When done replacing it-make sure you bleed the system

Remove serpentine drive belt from pulley, then disconnect power steering lines at pump.
Remove pump retaining bolts, then pump, Figs. 9 and 10.
Reverse procedure to install. Tighten to specifications.

Pretty basic advise for an "oldsmobile expert". There is no need to remove the PS pump. You will need to take the coolant overflow reservoir off and the plastic shroud that protects the wires from the pulleys. Remove the upper fitting from the PS pump. Remove the support bracket from mount about halfway down the hose(holds both pressure and return) To get to the other end you will need to remove the airbox and the flex tube from the throttle body. Don't forget to unclip the wire from the sensor. Use an 18mm "crows foot" or a stubby box wrench to remove the lower fitting. There are two, trace the line, it should be the one to the rear of the car. Pay close attention to the routing of the original hose. Fish the new hose in the same manner and reverse the process. Remember to flush the system. Remove return hose from pump and cap fitting(should come with replacemnt hose) put return line in a bucket, fill pump, turn car on, cycle steering until fluid is clear, remember to continue to fill pump. Hope this helps, if you find an easier way, please share.

Its basic allright for a beginner to learn