well im thinking about changing from celestine to a paladin, since im trans celestialism how far will i be able to get in blademaster or bonecrusher?

What race are you?
As Trans you have around 1700 lessons in ther, when you forgot this skill you will lose 20%, so 1360 left and when you move it to another pool you will lose another 30% of 1360, so you should have arund 950 lessons. Its more then for Fabled.

And you can't move lessons from Arcana to... Physical? I don't know what it's called.

He can move lessons to Body pool. He will be have just around 950 lessons left to learn in Knighthood and Athletics.

thats way to much im gonna go aquamancer then how much would i go down?

I'd guess about 20% since Elementalism and Cosmic are both in the Mysticism pool.

Yep.
And you would need to forgot Sacraments and Tarot or Healing if you have them.

Changing guilds is gonna make sure i dont reach trans anything, i doubt im gonna do it anymore i wish the change from guild to guild be less.

They want you to think stuff it I'll create another Character and then waste credits on that new Character in the end too!

I like to think it discourages guild jumpers...which it does. It also encourages a small credit purchase to make up the lessons...which means the game makes money and we all get to keep playing it. I don't see a -huge- problem with it.