I can't imagine using an electric oven.
The range (gas burners) are much more responsive than what you might be used to, so your margin for error goes down and your attention span goes up. The number one issue I see with home cooks is controlling heat, as crazy as that sounds. Most seem to think that there's only two settings: Low, and Max. It'll take some time but you'll need to adjust the burner on your pan according to what you observe going on in the pan. If it looks or sounds too hot, it probably is.
As far as the oven goes, gas ovens are incredibly inaccurate. I would highly recommend getting a cheap oven thermometer like this:
http://www.staples.com/office/supplies/S...PID=447101
Cheap $7, replace it every year. Additionally, all gas ovens have hot spots, so if you do any baking you'll see most good recipes call for you to turn the baking sheet halfway through cooking. The science behind all this is lengthy but most commercial gas ovens are not built with professional cooking in mind. The variance from one spot in the oven to another spot just 6 inches away can be as much as 50 degrees, so rotate your food frequently.
Those grates on the burners should be dishwasher safe if you've got one. Otherwise just soak them in hot water, give em a scrub and rinse and they're good to go. Most burner grates have a coating that prevents food from sticking or staining too bad, unless you really burn something on there like burnt sugar or something.
Edit: I see on that oven that there is a convection option. Good call on buying that. That changes everything. Convection will make the heat distribution a million times better, HOWEVER I would highly recommend getting that $7 oven thermometer. I would always use the convection fan no matter what you're baking. What you may find is that you need to decrease the temperature given in recipes by 25 degrees or so (Fahrenheit) Most recipes are formulated for still ovens. Convections are so much more efficient that they often run hotter than what recipes call for.
Looks like a pretty sweet stove actually. Have fun with it.