Howdy and welcome. I'd say once you're into guns, you're in it for life. I remember when I was at your position.
I'd say by a couple of months to one year, you should be up to speed on most gun stuff.
Go to an Appleseed if you can; it's free for you.
"...and an old German guy said there was a bit of an unsaid joke about the Nazi salute; apparently when they clicked their heels and raised their arm up in the air in a Nazi salute, they were saying, "we're in this much s___."