If you want to learn Wayfinder, Lucas’s idea is great, doing just the bare Wayfinder call. Then you can see how it works, and very gradually add parameters to see the result.
As I’d alluded to above, if I knew of any MODx and CSS newbie who was considering a dropdown, I’d have them avoid it like the plague, unless they’re doggedly determined to put in the time and learn it.
CSS skills are definitely needed for any serious menu styling. Reading lots of good random web pages about it did not work well for me. Too disjointed, and CSS people code things in idiosyncratic ways, because it is so flexible.
Reading an actual book did. This is the one that moved me way ahead:
http://www.amazon.com/CSS-Mastery-Advanced-Standards-Solutions/dp/1430223979/ref=sr_1_5?ie=UTF8&qid=1299706455&sr=8-5
But it’s true, coding CSS is not for everyone (nor is content management). I put together a Wordpress site for guy’s business with all the trimmings. Then he got all excited because his friend, fresh out of school, wanted to do a re-design. The friend just made him a Dreamweaver site, and deleted the old site. I found out after the fact, and told him, oh Dude! You just crushed your SEO, deleted lots of good content, and eliminated any content management. Ooops.