I got 60 def when i was f2p. Are you familiar with the Moss Giants on Crandor? If you are, well then thats a nice place to train even though u are p2p. There are 3 of em. i know it's nots a very good place to train but thats where i got all my stats to 60. Well my attack, strenth and defence. Then i finally become member after a long time so for f2ps i know a lot of place to do stuff. Well there you go. Although now I usually train how that other person said. I get a slayer assignment and get 2 levels up at a time. Good drops and good exp.