TS, no worries. NR deck can be real good, even if you are new. I played with this deck alot, and I found Foltest to be the best leader at a lower level. You can destroy alot of your opponent with this deck. Many units are good, stripe commandoes are only good for some points. You can disrupt the opponents play with units that destroy their units, and the provison costs are very low.
Mauler 2x, dun banner 1x, lyrian landesknecht 1x/2x. Add a tamarian drummer in there as well. Base units. These take out the opponents good units. Then add things like dimeritum shackles. If you want to toss up some fast points, add the cow the the commandoes.
Absolute core in all my NR decks until now have been 2x thunderbolt, botchling, 1x reinforced trebuchet. botchling can be flipped if damaged, and both it and the trebuchet are horrible to have against you, as they do damage every turn.
Just stay away from the machines! Toss the silly wolves. Non of the 4 provision units are any good except for special decks, so drop them.
Northern realms can do alot, but damaging units and breaking the play of the opponents is one of the easiest and best tactics to begin with. I'm pretty new, but I have developed and won alot with this kind of deck. And I did not even mention any gold cards to you, so there is alot of options. Northern realms is also a great "charge" deck and a great "boosting" deck, so there are plenty of good tactics to choose from. A simple boost/damage deck is what I've had most success with. I'm trying to move to a charge/boost -> damage deck, but I'm still finding it difficult.
You just need the right neutral cards and gold cards to go along with your deck as well. But it might be a matter of taste. How would you LIKE to play? What is your style? NR might not be right for you.