Roxy -
Don't be shy to ask these kinds of questions. Everyone has to start somewhere. A lot of people on this board have a wealth of information. And I'll offer a drop in the bucket since I'm not tired right now.
1) If two teams open up at -110- and -110, there is no real favorite in the game and it's just the books way of winning by making there juice money.
2) I personally try not to get too caught up in line movement. Sometimes it's massive public money on one team. Sometimes it's a "trap". Some people claim they can look just at line movement and make bets in sports.
3) I suggest whatever style you choose to look at games, you keep it consistent. A good way to start is to make a checklist of things that you find to be important in determining games. Follow that checklist day in and day out and don't stray from it. The more consistent you stay, the better.
4) A few example items on my checklist include the listed pitchers home and away stats. Particularly strikeout/walk ratio. If it's anywhere near 3:1 (3 strikeouts per 1 walk) thats very good. Strikeouts and groundballs/9 innings are important in capping because strikeout pitchers and groundball pitchers have the ability to get out of jams via the strikeout or double play. Pitchers who have a hard time striking batters out, will have a lot of balls hit in play off of them. Every pitcher has runners on base throughout the course of the game. The games are make or break by how well a pitcher can manage men on base. Pitchers with a high flyball ratio have a harder time getting out of these jams because of homeruns, balls in the gap, or sac flies. Groundball and strike out pitchers can get the critical double play and strikeout - the two most important tools for getting out of jams. They usually fair more successful. Sometimes you can find starting pitchers that aren't big name guys because they have high ERAs, that have great groundball/9 innings or strikeout:walk ratios. These guys will usually be big underdogs and you can get a great price on them. Go through a checklist similiar to this.
4) Determining Winners or Values: Sometimes, as you go through your checklist, a game will appear even. So, let's say I go through my checklist and the Cardinals and Phillies appear to be dead even through all of my research. But then I look at the line and I see Cardinals -200 and Phillies +170. I'm taking Philly I don't care what the line movement did.
I hope those are a couple of pointers to maybe nudge you in the right direction. I'm sure others will chime in. If you have any questions don't hesitate to ask.