Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
All u need is some spring compressors, some spanners and a jack. (very basic tools)
Best way to find out how is to buy a book on the VR/VS commodore.
Or
U life the car up, take the wheel off,
Use the spring compressor to compress the spring, unbolt the top of the strut. then unbolt it off the brake system.
Its not that hard.
Just make sure u put all the bits and pieces back into the right spots when u re assemble it!!
There a few washers that need to go back in the right way on the top of the strut!
Also u don’t need to replace the whole strut, u can gat new inserts!
Don’t for get to get a wheel alignment after u have put new shocks in.
Sorry to be really broad.