it is non-hard. it is very easy to know.
learning points are simple. every level you reach it gives your level number of learing point, example:
level n gives n learning points
spend to spellEdit
you spend learning points like you win them. see examples:
magic skill level 6 costs 6 LP(learning points)
sword skill level 21 costs 21 LP and makes you learn flower blade if you have enough inteligence
gun skill level 123 costs 123 LP
magic skill level 123456789876543210 costs 123456789876543210 LP, etc.