yeah basically, just try to get your weed fine as possible so it'll be easy to infuse it into a little bit of butter/oil. As far as how much a person needs to get fucked up i'd say for a once a day smoker or less maybe half a gram or even less honestly. For a person who smokes pretty heavily more than once a day i'd say eat half a gram to a gram. And for the total pot head who can smoke an eigth in a day every day you're going to need to eat anywhere's from 1 to 7 grams to get jacked. I've smoked 20 years and top shelf buds, it takes me at least 4 times more edibles to get high than all my friends who just smoke weed after work and recreationaly. I have to drink four 80X sodas to get high where as my other buddies can drink half of one and be so high they get scared and cant talk and just really trip out for 8 hours straight.
Moral of story, just test it out and you'll learn what you need.
Oh and its best to wake up and eat on an empty stomach then an hour later eat something else you'll see how badass it is as opposed to eating at night after smoking all day, you might not even feel it.