Traditional prep is a luxury for those who are really busy. A lot of people here do traditional prep during the weekend when they have the time to knead. Even then, it's 15 minutes of kneading and you can keep the unused kava in the fridge for a day. Kava is a haven for microbes, however, so don't keep leftover kava for longer than two days.[citation needed]
You may want to consider trying out one of
@Kavafied 's Aluball shakers. If you use the shaker as is with the one included aluball, your brew will be on the weaker/mellow side, which may be a good place for you to start. Once you start feeling the effects and desire a stronger grog, you can buy a second Aluball. I myself have only used this for medium grind kava so I can't say how your mileage will go with using micronized in it, but there is no shortage of users here who will know much more than I on using the shaker in general. The reason I mention this useful tool is that it makes kava much faster than traditional prep if time is of concern. It's not the same as traditional prep, as a lot of Aluball users also do traditional prep, so keep that in mind.
This thread right here may be of assistance in helping you figure out the differences in prepping medium grind and micronized:
http://kavaforums.com/forum/threads/medium-grind-vs-micronized.11590/