If you want to start loading, go for it.
But:
If you use factory new brass, it should chamber ok.
If you use used brass, it will need trimming to a uniform length; case mouth champfering (new brass needs that, too) and it will need full length sizing.
You can buy some bullets. I suggest Hornady 165 g or 180 gr pointed soft point, flat base. They are cheap and accurate.
You will need to buy powder and primers. I suggest 4350, because it will fill the case well. Any primer will work.
One of the things we do when we make ammo for our rifle is seat the bullet to match our chamber. You can't do that without a rifle. But what you can do is deliberately seat all the bullets too long - say 3.40"
When your rifle arrives, measure the magazine length, and seat a round 25 thou shorter than the mag length and note that OAL in your log book. If you intend to use the mag, no round of any bullet shape can exceed that OAL.
Then carefully chamber that mag-length round. If it comes out with no rifling marks - that is the OAL to use. If it has marks, seat it a bit deeper and try again. Repeat until a round comes out with no marks. Seat the rest of the ammo to that OAL and carry on. When you get a good accurate load, try that load with 10 thou more or less length, and which OAL is best.
When I get a new rifle, the first thing I do is a rough survey to get a hint of what the rifle likes. I load 5 each in 0.5 gr. increments from 2 grains less than the start load (for 4350) and to a grain more than the Max load. I am prepared to stop shooting at the first hint of pressure and bring the rest of the ammo home.
With a new rifle I would also take 5 extra rounds to the range for break-in. For the first 3 shots I clean after each shot. It is amazing how much crap these first shots leave behind. Then I fire the 2 shots and clean.
Then I start my 5 shot survey, and clean after the first 5. It has been my experience that if I do this, the barrels tends to foul less for the rest of their life.
So start getting brass and preparing it.