That looks like a sweet camera. The earlier post about keeping it simple and learning the basics is sound advice. You might go out and buy a bunch of stuff then later learn that either you didn't need it at all or you wish you had bought a different brand/model, etc.. Guess I'm a bit of an anachronism. I believe in starting with old school basics, like manual transmission in a car and manual exposure in a camera. If you learn to drive on a standard and one day need to drive an automatic, no problem. If you learn on an auto and one day need to drive a standard it is a challenge to say the least.
Photography is may not be quite that extreme, but there is a parallel. Starting with a manual allows you the opportunity to learn about light and exposure and the tricks you can play with light as well as lighting situations that can trick automatic exposure cameras and how to correct for them. I still cling to my old SRT 101 and 102. They do have internal metering which is nice, but even if the meter batteries die, I don't have to miss a lick. I know the exposures for different film speeds in various lighting. In fact, if you understand exposure values, you only need to know one setting for one speed in one specific light condition, you can extrapolate any other setting from there.
OK, I'll shut up and go back into my cave now to try to get a fire started by rubbing sticks together. Sorry, I'm new here and get carried away sometimes.
Enjoy the new toy.
Regards,
Raymond