When I bought my D70 a couple of years ago, I soon purchased an SB-800 & an SB 600. It took me about two weeks to figure out the instructions in the camera's and both flash's manuals.
Bought the wireless "trigger" and played with the trio around the house, much to my better half's dismay & annoyance. With the help of the guy who sold me the equipment at the camera store I was able to finally master the "magic".
Since then I haven't taken very many pictures utilizing flash. Now every month or so I have to sit down and figure it out all over again.