Let me be the first to say "Welcome to LRH". You have started a fire that is self-igniting and all consuming. Great hobby to have. The more you shoot, the more you reload, the more you shoot.
Won't take the little woman long to figure that out either.
For on-line help I go to; (accuratereloading.com, handloads.com, hodgdon.com, nosler.com, reloadersnest.com, alliantpowder.com, lapua.com, ranshot.com and barnesbullets.com). I made a folder under "Favorites" named "Reloading" and copy them all to this folder. I put other stuff in there also, like ballistic tables.
I have never loaded for the 7Rum but plenty of folks on here do. Good luck. JohnnyK.