I just checked my library for a book. No luck. I will try a google search. OK this Lyman's manual looks good. Perhaps print it out and study it.
http://pdf.textfiles.com/manuals/FIREARMS/lyman_blackpowder.pdf
I see there are a lot of you tube videos. You can see the basics and some tools of the trade in action.
Casting bullets and shooting muzzle loaders are two subjects. Maybe forget the casting for now. Round balls are cheap enough.
A potential shopping list, this is a paraphernalia intensive sport:
1. I would buy 100 round balls. You can read the size on the mould.
2. Cleaning patches are ok for patches. Size??? Hmmm. Probably an inch around. You can lube by hand it is safe stuff.
3. I prefer, real black powder. I am sure you can find Goex FFF. I guess, a 40 grain load might do. Maybe try 30/35/40/45/50 for starter. Nothing critical for safety but trial and error for clean and accurate. You probably dont need power, you are not hunting.
4. A ram rod with a built in ball starter.
5. A measure, of some sort. Might be nice to have a brass adjustable (telescoping type) You need to do a lot of trial and error shooting.
6. A cva owners manual would be good if you can find one. They may have good starter loads and also tell you if they have the twist for heavier bullets. Also disassembly instructions.
What is that model? Is that really a cva?? I never saw one like that before!
You might do well to find a web site that specializes in the subject.