Don't feed it waxworms... sometimes you can give them as a VERY occasional treat. Otherwise they are to be used in very small amounts to help fatten up a skinny gecko.
If you want to work on taming it down, I would suggest handling it some while it's young. You don't want to handle it too much though or you'll end up with a dead gecko from stress. Give it time to get used to you just taking care of it (with little to no handling) and then start working on trying to handle it. It's prolly gonna bite you regardless of how careful you are. Also, I personally feel that flat out grabbing your gecko just freaks it out and will never work in the taming process. I just reach down and get my hand in front of it and work it underneath (usually while being barked at) and then once it's in my hand I grip it VERY loosely. Mostly the gripping is just to cover it up and make it feel more secure while transporting it out of its cage. That's how I hold them when I get them out. Make sure you are in an area where it can't run behind, under, or inside anything (including doors) that you won't be able to retrieve it from. I can assure you that it will probably take off across the room quite frequently and it REALLY sucks when you have to spend 2 hours trying to find/capture it. My 1st baby tokay I had got loose while I was taking it out of it's shipping container to see it (at my uncle's house). We had to lift their couch with a pullout bed and dig around in there trying to find the gecko. The 2nd baby I had got loose and went underneath the frame of my waterbed. It took me 2 days of leaving a bowl of mealworms and a shelter on the floor before I finally caught it. I also had one of my tokays decide to run up the vent in one of my good stereo speakers and I had to tear it all apart to get the gecko out.
Have fun with your tokay though... they are great reptiles, just very under-appreciated. Unfortunately something happened to my last tokay the other day and I had to put her down. I had just made the decision to get a savannah monitor and I had gotten rid of all my reptiles and amphibs except her. I guess she didn't like the idea of being in the same house as a sav...
Josh
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Then it comes to be that the soothing light at the end of your tunnel was just a freight train coming your way...