By all means, if your board hasn't been tuned since you bought it, sharpen the edges and wax it. Edge sharpening is good for 6-10 days, depending on how much ice you ride on. I like to hot wax either every time or every other time out, again depending on how much ice I ride.
To start out, you can probably find a little edge sharpening tool (file on a guide) for $20. If you reduce your file pressure as you sharpen, you can get rid of almost any burrs that form, negating the need for a honing stone. Intermittent sharpening can be done with very light file use. (Assuming you want to start out cheap and build your tuning kit as you go, here.) "Detuning" refers to the process of not having the last 2 or 3 inches of your running edge as razor sharp as the rest of your edge. The idea is to allow the board to not be as hooky and release its edges easier at the end of a turn, when this is done. Don't think of it as detuning, though. Think of it as simply not sharpening those last inches to quite the razor quality that you want on the rest of the edge. Somehow in recent years, the term "detuning" has been misconceptualized and bastardized into dulling the edges so that they don't catch on rails. This isn't detuning, it's ruining. Unless you have an old, unused beater board to trash and dedicate solely to grinding rails off the mountain (ie; around town or the local park), do NOT "detune" your edges by intentionally dulling them. (Sorry for the rant. That's a pet peeve.)
On waxing, you'll want to hot wax. Don't bother with the rub on / spray on varieties. They're junk and only last for a run, maybe two. Use an old iron with no holes in the bottom to wax. Flea markets, antique shops, and ebay have them cheap. Ski shops have them, as well, at a heftier price. You'll need a hard plastic scraper, too, to remove the excess wax, and something to structure it. A green Scotchbrite scrubby pad will suffice for structuring, though more expensive brushes for the purpose do a better job. Pick a wax suited to your conditions. You don't need crazy expensive race waxes, but get something properly suited. It's tough to wrong with Swix. Reasonably priced and great for recreational use.