Hope you get some feedback - I love the Kromac mini, and want to start an army with him (have only ever played 3 or 4 games 2 years back) but have no idea where to start.
The list is a little old as the warmachine section here on heresy is a little bit slow, unfortunately.
As for Kromac, he's apparently a pretty great caster, and one who can really get in a mix it up a bit with the enemy. If you want to start the game, I'd suggest getting a Battlebox (or better yet, the Circle half of the 2 player battle box), to learn with, and grab Kromac early on.
I can't say much for circle, not being a circle player myself, but if you grabbed the Circle half of the 2pp battlebox, Kromac, some shifting stones and a blackclad wayfarer, you'd probably be off to a good start. That would give you a 25 pt force to practice with. Just remember that Circle is a tricky faction with a steep learning curve, so persevere and good luck
It's all in the name.
Looking for a club in Brisbane, Australia? Come and enjoy a game and a beer at our friendly club in a pub, Sunday nights from 6:30. All brisbanites welcome, don't wait, check out our Club Page on Facebook for details or to organize a game. We play all sorts of board and war games, so hit us up if you're interested.
Update:From the 25th of May 2014 we'll be Meeting at The Junction pub in Annerley, opposite Ace Comics and Games Still playing 40k, Warmachine and board games of all sorts!