The best way to gain skills on tibia for a knight atleast. Get a training partner about 15+/- your current skills go half/half, no rats, and just be willing to sit for a long long time.

Equipment:
Weapon: Knife, Dagger, club, etc..
Wooden Shield
No helm unless they are 10+ skills from you or your taking so much damage it is not even funny.
No Armor, No Legs, No necklace.

P. S. Reason for no rats is it screws up your shielding.