For any DIY'er who's head is spinning after reading this thread, fear not, you do not have to know any of the technical side of things to effectively control LED lights (of course it does help!)
1.) Find LED products they are advertised as dimmable. Try and use products with non integrated drivers. They tend to be of better quality, and drivers can be changed if they perform poorly.
2.) Contact the manufacturer for a recommended driver for dimming, and dimmer, or at least recommended dimming type.
5.) Read the fine print. Many dimmable drivers will have distance and wire gauge specs.
3.) Always use the neutral regardless of what the manufacturer says. High quality dimmers do make a difference. If you're using wall box dimmers use Lutron, hands down. The tech support alone is worth it.
4.) Test before installation. Uninstalling is not nearly as fun as installing, trust me.