How to pick a (yale lock) cylinder lock

Get your self an old cheap cylinder(bird brand are ideal) , mount it in a board and practice picking. Apply the lightest possible turning pressure to the tension tool put the pick in the keyway as far in as the key would go, you should feel the pins move up (if not you have too much tension) then gentle but firmly pull the pick in and out, you should feel the pins bouncing, racking the pins with the pick.
Try different tensions and pick manipulation, lock picking takes practice. When you get good at picking this lock practice on a better cylinder, padlocks and euro locks.

Most locks turn both ways try each way. Old locks should be lubricated first with WD40