Remember the five year wait?
I got my first one in less than 5 years . . . 4 yrs, 10 mo and 20 days
. Worth every day of wait time.
Now to the topic at the top of the thread - Only advice I will give (most other advice so far is spot on) is PRACTICE, PRACTICE, PRACTICE !!! Order 50 pounds of BP of your choice and while waiting for it to arrive, cast as many bullets of your choice to last you a long time. Then, load whatever empties you have, shoot them, repeat over and over again. The first 3 months I had my first BPCR, I went through 15 pounds of powder, 1500 primers and about 100 pounds of lead. Not that I'm a really good shooter, but boy, did I have fun - that was almost 19 years ago.
HAVE FUN !!!