it would be a great help if l can get a workshop manual...
and the booster gaskets

you can use brakes oil

Have u tried looking at the Haynes repair manuals? It is inexpensive & a great resource to have.

Brake service is pretty similar from car to car.

Fluid change is easiest done if u have a brake bleeding kit (a bottle, hose with a one-way valve). If not, u will need a person pumping on the brake, & another controlling the bleed valve at the calipers/drums.

Without writing a whole manual here, l will list the basic steps.

1. Locate bleed valve at the brake calipers/drum brakes.
2. Release valve one at a time.
3. Step on brake to squeeze out fluid.
4. Top up with new fluid without letting reservoir going empty.
5. When clean brake fluid emerges from valve, make sure there r not any more bubbles coming out, close valve.
6. Repeat 3 more times at other wheels.