haynes has a bit of a long winded process, but here is a short summary:
1) engine off, top reservoir up to maximum
2) have assistant start engine whilst watching reservoir. be prepared to add more fluid as the level is likely to drop quickly if the system has been drained
3) once stabilised turn engine off
4) check & top up to maximum if necessary
5) start engine, allow to idle for about 10 seconds then stop, check and top up if necessary
6) restart engine, turn steering wheel onto full left lock, and hold it there for a few seconds, then turn onto full right hand and hold for a few seconds; check all hoses and unions for signs of leakage
IMPORTANT: DO NOT HOLD THE STEERING AT FULL LOCK FOR MORE THAN 10 SECONDS AT A TIME OR THE HYDRAULIC SYSTEM MAY BE DAMAGED
7) stop the engine and top up fluid if necessary
8) start engine once more, run for about 2 minutes turning the steering fully to the right and left
9) once all the air is removed from the system, stop the engine and check the fluid level. take the vehicle on a road journey for a few miles, then recheck the fluid level with the system fully up to operating temperature. repeat the bleeding process completely if there is any suggestion that air is still in the system.
Naturally all information given is purely speculative and any advice given or taken is used entirely at your own risk blah blah blah.
Good Luck !
(in case you're an untrustworthy soul, Haynes Manual 3929 Page 10.19 Section 22)