Buy several good pairs of scissors. Do it now. When you start take one or two stems at a time and trim 'em good. Clip as much leaf as possible. If you're up for more clip a few more stems.
Take your time. Expect to spent an hour or two a night for a few nights.
Drying. Optimal is about 70 degrees Fahrenheit, 60% relative humidity and about 12 days until the stems snap when bent. This can be difficult to create and maintain unless you have the required tools.
If not find the coolest spot you can hang the colas. Near a garage floor works as it's cooler than hanging from the rafters. Once the stems snap went bent it's time to jar.
Clip buds from stem and place into a jar with a lid about 3/4 full. Do not pack jars.
Keep in a cool dark place and open daily for a few minutes and allow to breath. Twice a day is good.
After a week or so the bud flavor, as the water is slowly removed, will improve. After 3-4 weeks it will remain stable for several months and you won't need to open the jars daily, just when you need some or just to smell it. Trust me, it's a delicacy.
Of course you will try it after harvest (nasty, too green), after drying (harsh) a day or two in the jar (getting better) and of course after it's ready.
Best bet once all is said and done is to roll one up. Taste and high can be assessed.
ProTip: Wear a bandaid on fingers touching siccors. New one's each trimming sessions.
FYI, it's all worth it.