I don't know what's with younger people these days, but inhaling is as easy as breathing. When you breath in, you're are inhaling air. One way is to fill your mouth with smoke, and inhale.

Or take the pipe, take the end of it, put the end in your mouth, like you're drinking a bottle of pop, lips and all, and breath in through your mouth, filling your lungs up with smoke.

How hard is that, really? I knew how to smopke a joint the first time it got passed to me. You want to fill your lungs with smoke, how hard is that to understand?