[Mosin-Marauder]

I am looking into getting a Lee Classic Loader to start fine tuning my target/hunting loads for my Mosin-Nagant. First off I have some questions though.

Is the Lee loader a good beginning tool? I won't be reloading other calibers and this seems like a good way to learn.

Where would I go about getting different measures for loads? My dad's reloading manual does have my caliber and I'm not sure what powder and stuff I want to use.

What powder, primers, and bullets do you reccomend? Not loads, just brands.

Finally, how would I go about tweaking loads and finding out other stuff like if my primer is seated correctly or if the bullet is?

If a a few folks could help a newbie, I would appreciate it. Thanks!