Since the pipe doesn't have a carb, be careful not to burn your throat too badly. It'll take a while to calm down if you do and taking hits while your throat got all burnt will hurt a bit, but still doable.

Break it up into smaller pieces and pack it up to the top. THe flame will go out quickly but it's good cause the weed won't idly burn. Just relight it when you take a hit or when needed, and inhale deeply.

Holding it 3 - 5 seconds will do the work, so don't worry if you see a lot of smoke.

Happy smoking.