The following video is a great tutorial for both novice and intermediate ice climbers alike. There is nothing more important than a good stick for a climber on steep terrain. Every stick should be considered a hold and must support your bodyweight.
The one thing that should be added to this video is one's need to trust the leash on the tool. If you have a leash on your ice tool then you should allow it to support your weight as much as possible. If you don't do this, then your forearms will flame out much more quickly on steep terrain.
--Jason D. Martin