Lighthouse,
I'm not sure of your experience level, but having had to learn Land Nav in a similar way to you, this is what worked for me.
Basically the advice I was given was
Task mastery + Experience = Outcome
TASK MASTERY
- I spent a whole day "translating" (and I mean translating) the FM 3-25.26
- Then joined two sessions with the local ROTC on one of their Land Nav days, (UNLV and then UCLA),
After this I felt I knew enough to have my Land Nav 'system' down. I was able to score 100% on the course at Fort Hunter Liggett.
The guidance I was given was, learn the tools like a science (i.e. pace counts, attack points, planking, dead reckoning, resection, pace drift, the list goes on, from memory my final list had 27 skill points to master), then practice the tools until it becomes an art.
Your local ROTC group is the Campbell Battalion. Call them, see if they will let you tag along. But don't expect to have your hand held. Come prepared.
Link - Campbell Battalion
Caution: I've been advised not to learn with the local Orienteering crowd, you may learn some slightly wrong techniques, as they have a different goal to mil. I could be wrong.
EXPERIENCE
Next, the advice I was given by a BTDT, was get out on courses and get experience. "The more you get 'lost' now, the less you get 'lost' later." Execute an AAR after each session, and figure out what you learned, write it down.
I achieved this by finding the closest Orienteering Federation group (for you it's either Raleigh, or Charlotte) and called them, these people love Land Nav, and where very helpful. They provided me with grid refs on courses in my area. It seems to me courses are set-up all over the place, so there should be half a dozen near you.
I went out with my wife and just started Land Nav'ing. Got the feel for when to bust a draw, and when not to. When to hit a hill and when to go around it, etc, etc. Combined this with the Ruck part of my PT. After maybe 8 full day sessions out, some at night, I really started feeling comfortable with a map and compass.
So basically, I didn't feel like I needed to train with a group so much, just made sure I had the 'tools' down correctly first and then always made sure I was using the tools right, and not developing any poor habits. Perfect practice makes perfect.
2 x local groups POC follow.
Backwoods Orienteering Klub
RALEIGH
http://backwoodsok.org/
919-828-6068
or...
Carolina Orienteering Klub
CHARLOTTE
http://www.carolina-ok.org/
There's a number of POC on the website.
HTH some.
S