I aquire two sets of BOFA long time ago, because then the hill is complete and also for doubling the armies. BOFA also had a range of very beautiful miniatures
http://www.forum.specialist-arms.com/index.php?topic=4118.0Today copplestone and magister millitum (elves and orcs for peter jackson aesthetic) seems the best option to play in the middle earth.
There were a MEWM (middle earth warmaster) in a dedicated yahoo group that make a wonderful set of rules, but unfortunately I lost the pdf in some migration of pc to another.
In my opinion playing the basic BOFA game for beginers in wargames seems perfect. No messing with armylist or multiple choices. Just play the scenario a couple of times and then decide if you could go further with another scenario.
The bofa rulebook suggest some scenarios. My advice is not to play the one against Smaug. This game is very unbalance and poorly design, so playing it with people new to wargame world could dissapoint them and also generate a uneasy feeling to the umpire.
My advice is once played the bofa a couple of times move on to a battle but using the light vs dark army again with another game table (obstacles). And avoid fortress and seiges until all the players are veterans.