Half it at least, paint the ends. (Split or bandsaw)
DON'T touch the sapwood! Wait until it's seasoned.
Only remove the bark if borers are a problem in your area.
The sapwood is probably fine, often the bark gets damaged, but the sapwood is fine underneath it.
The common mistakes are leaving timber "in the round", leaving it on the ground or putting a tarpaulin over it.
It needs to be dry and have good air movement to season it.
Del