You can make pure thc extract in the form of honey oil but it takes a LOT of bud to produce a small amount. It will hit you like RIGHT NOW but I find the buzz doesn't last as long but is much more intense initially similiar to hash. It's fairly easy to make but very illegal as it's a concentrate(don't know why).

Smoking cannabis has a different psychoactive effect then eating it thus the more intense initial buzz from smoking. I haven't eaten much but a few people have told me they've eaten some things that were pretty powerful.