smoke n steal

Sup ppl, well this is my first post and im gettin about 1.5-2 grams from my friend, and i know this is a nooby question but how much is in a gram lol like how many teaspoons? Also he is sellin me his old bong (which he just bought like a month ago) because he is quitting. So im going to smoke probly friday night.....
what should i expect?

Also i made a lightbulb vaporizerlike 5 mins ago and it looks cool so ill probly smoke ome out of that somtime also, but what i really wanna do is make a few firecrackers, can you just tak the tops off oreos, sprinkle on weed and let it sit like you do normaly?

Sorry ths is mostly off-topic but this site has no beginner or novice smoker forums so i chose this place.
Also what are some tis all around for smoking weed?