Although it was a .45 cal, I built one of these kits about 11 years ago.
Because it was so long ago, I don't remember any good pointers for you except to say it was a very nice pistol when I finished it.
As I am sure you noticed, it is a level 1 kit. It is basically a production gun which has not had the lock, trigger, trigger guard, sights etc installed and the wood is semi-finished.
You shouldn't need much in the way of tools except perhaps a few drill bits to true up the holes to match your parts, a small file to true up the rough spots on the castings and a lot of sandpaper for the wood.
When sanding the wood, keep trying the metal parts often to get a good match between the wood and the metal. If you remove too much wood, you can't put it back.
When installing the nosecap, one technique is to get the cap to fit the mortice in the wood well making sure it seats on the shoulder of the wood.
Then sand the wood down to be flush with the metal. It will scratch the metal part, but its outside surfaces are still in the as cast condition so, no harm done.
After the wood and metal are flush, then go to work on the metal, finishing it with black wet/dry sandpaper.
You will not be removing much material, and finish sanding the wood to match the small amount that does come off of the casting is easily done.
This method can be used on the other parts as well.
The other tools that may be helpful are a #2 Exacto knife with blades, a few good screwdrivers and perhaps a 1/4 chisel.
Before putting a finish on the walnut stock, take the stock outside on a bright day and wet it with water. That will tell you exactly what color it will be after oiling it.
If it is too light, consider staining it to make it darker. I would suggest Birchwood Casey Walnut stain but one coat would probably be as much as you would need.
Although this is a 95+% finished kit and you haven't built a gun before, don't be afraid to ask us questions about anything you are not sure of.
You will find that some of the best builders in the country are on this forum, and all of them will be more than happy to answer any question you may have.
Happy building, but beware!! Building these things gets in your blood and you won't be happy until your working on your next one and dreaming about the one to follow. ::