Brake bleeding a 1994 xj40 sovereign

I have recently changed the nitrogen sphere on a 1994 xj40, ( l had lost all power assist braking) now the braking does not seem as good as it used to be, so l am assuming that bleeding the brakes would be a logical thing to do next, l have one of those vacuum pump devices but am not sure where to begin the process

Barco, I ordered these speed bleeders years ago. The best $60 I spent on my car. When I bleed the brakes, I start with the rear right caliper then rear left, front right, front left.

Just remember the rears are supposed to be able to bleed via the pump.