[Marak1972]

Where do I find the BP costs of the Way of the warrior etc. And what would the benifits be to having that on my gunslinger adept??

[Crash_00]

The Way of the Adept
It's a PDF only rules supplement with several ways in it. The ways reduce the point cost of certain powers. Each way has a list of powers that are reduced by 25%, but you can only choose 1 power per two points of magic to discount.  There are also some powers in the back, but they are only available to adepts of certain ways. The Warrior power isn't useful to gunslinger adepts (it only works for melee attacks), but the way would still let you squeeze out some more points for powers.