1.Rd1+ cutting off the king by one more file. Ke7 2.Rd4! the famous lucena manoeuvre or the bridge building move.The idea of it will soon be clear. [2.Kc7 Rc2+ 3.Kb6 Rb2+ 4.Ka7 Ra2+ 5.Kb8 and white will have to start all over again.] 2...Ra1 3.Kc7 Rc1+ 4.Kb6 Rb1+ 5.Kc6 Ke6 [5...Rc1+ 6.Kb5 Rb1+ 7.Rb4 is the main idea of the bridge building manoeuvre.]
6.Rd6+! (Rc4 and Re4 both win) Ke7 [6...Ke5 7.Rd5+ Ke6 8.Rb5+-] 7.Rd5+-
Stage-1: Get your passer to the 7th rank and your king to the 8th rank, thus sheltered from annoying checks by the passer itself.
Stage-2: Either earlier or now, make sure that the enemy king is cut off from your passer by 2 files, by driving it away with your rook.
Stage-3: Play your rook to the 4th rank, the key move pointed out by Lucena.
Stage-4: Bring out your king avoiding checks with zigzag movements,taking care to support your passer, till the enemy stops checking.
Stage-5: Get your rook to the 5th rank, taking care if necessary to interpolate the intermezzo check.
This was quite basic but a firm understanding of this position is very important for a player to master the rook endings because finally more than half of the rook endings boil down to this position. So have a firm Grasp of how to win the lucena position.