I had NFL Game Rewind for last offseason and this whole season. I went back and watched all the games from 2009 and 20010. You only get coaches film of like maybe 3-5 plays a game. So you can really only break down DL/OL play, QB, RB, LBs at times, and WR's on short routes, DBs if the ball goes there way or if the pass is within 5 yards usually. Anything down the field out of picture of course you can't break down which is a lot since you don't know who was open on plays, who got burnt... heck unless you know the playcall you don't know if players are running the right routes or messed up, etc.
Anyways, I have broke down film in the past, Oldman49er does it a lot as well. Just don't post thoughts on here thinking you will get compliments if you break down every play. Most people value snap judgements more than breaking down the film. It takes about 3 hours to do if you watch each play 3-4 times. You will see a ton of things you don't see if you just watch the game live. So you do learn a lot but you won't get everything obviously without being a coach and knowing the play and having the coaches tape. It can be fun but it gets tiresome when you are into hour 2-3. P.S. I liked to do it for pre-season because you can learn more about players and who you think should make the PS or roster. You get to find out more about the backups. Good way to kill time, will make you a more knowledgeable fan but not a lot of people will want to or have the time and energy to do it.
Also, may I suggest starting off by copying a play by play of the entire game on say espn or cbs sports's gamecenters. Then fill in thoughts below each play so you know what play you were writing about. Either put it in Microsoft Word and type under each play thoughts or print it out and leave room after each play to write. If you hate writing like me I would suggest typing as it is neater and faster. That's if you will make notes on every play.
Another thing to do in the offseason's to become a better and more knowledgeable fan is to watch old games or videos on youtube, hulu, etc. You can get your fix that way... watch all the nfl shows on 49ers, study old players and coaches, look stuff up on wikipedi, look at team records, stats, etc
Scroll down a bit, probably thousands of hours of video there
[ Edited by Gore_21 on Jan 30, 2012 at 8:35 PM ]