It is fairly straight forward.
Obviously you need somewhere dark to dry your harvest.
Then it is just a matter of cutting the branches off and hanging them up to dry. Wire coat hangers make great branch holders.
You can either "wet trim" (which is easiest) or "dry trim", but personally (and scientifically) it is best to dry trim once the flowers are dry.
After this you will need an assortment of glass jars in which to "cure", then store your finished buds in.
If you click on "journal" in the grow diaries menu at the left of this page, you will find many articles covering harvesting, curing and storage of buds.