If you do not know what bongs are then you must of been living in a cave! They are by far the easiest method when it comes to burning up your herbs and smoking mixes. Just grind them down with a herb grinder and place them in the bowl (it will be made of either glass or metal depending on the qualtity of your bong).
Place those green leaves inside and then apply a flame. Some people use a lighter while others prefer a candle of wick. This is because they give a cleaner flame. Lighters put butane into your smoke which is bad. Bongs are all about obtaining a clean and pleasant smoke so I advise you use a clean flame!
Now suck on that pipe, baby! Chug the smoke down the stem, into the water chamber and then cover the mouth piece and catch your breath. Exciting isn't it?! Now prepare to remove your hand from the top of the pipe, remove the flame, and inhale all of that smoke!
You just took a bong hit! Hold it in for a couple of seconds and blow it all out. Repeat as many times as you want! The below links have some great methods of using bongs so give them a click and learn.