woodcutting-you can sell logs (then oak logs then yews) to make lots of $ by selling them at the grand exchange
Train skills.
Train at demons. Much better xp and you wont have to heal.
You can get some good xp from doing minigames and then cashing in the points for the skill or just train it.
In order to gain Constitution Xp you must inflict damage on an NPC or in PvP and you will get 10% of the damage as constitution Xp.
You get exactly 187.5 xp per steel platebody in runescape which is probably the best way to raise smithing cost wise
You should train on goblins. They may be weak but you get xp for doing damadge not from killing stronger things.
u can make about the maximum of 100000 attack xp per hour if u train at the right monsters
Most people suggest chins.
I sugest you train on flesh crawlers. The are level 35 in level to of stronghold and they give the fastest xp on runescape f2p im pretty sure.
Gertjaars is the best account on the Runescape hiscores. All his levels add up to 2376, and his total xp is 1,699,056,298.
XP- something like 10-20k
101,333 xp.