I heard that when starting out, I should not get to "bent" on one particular faction; due to each faction has its own pros/cons/strategies...?

Is there a breakdown of the factions and their related play styles?

Try here:
http://www.mwrealms.com/forum/showthread.php?t=45826

It has lots of good advice for new players and, in particular, breaks down the S&W of each faction.

Also keep in mind that when you're new in the game and don't have too many playing pieces, you've got to make do with what you have. After having played a number of games, you may find that units from specific faction favor your playing style more than other. But it may also be that you really like to play mixed armies. Also I would like to suggest that you first play a number of informal games before trying to play at a venue. That way you can get the hang of the game and learn a few tactics in the comfort of your or one of your friend's home.

Thanks for the info.