Today is the day that Chicago Cub fans have been looking forward to for the last three weeks, the official and much anticipated ascension of Theo Epstein to President of baseball Operations of the Chicago Cubs.

In the eyes of Cub fans, this is yet another savior, after Leo, Andy, Dusty and Lou all failed to pull the sword from the stone. Now Theo Epstein, looking for a new challenge after almost ten years of reviving the Red Sox, rides in the town to take his best shot.

If he will succeed is to be seen in the days, months and years ahead, but if you are a Cub fan, here are some things you should be aware of:

• Don't get attached to too many players, even at the minor league level.  This organization is going to be bulldozed and then rebuilt brick by brick.  No player, at any level is safe.  That includes Starlin Castro. This team will re-evaluated from top to bottom and the type of player that exists in this organization may not be the kind they want in the future.  So, if the Cubs send Brett Jackson to Boston, don't sweat it. I guarantee at the end of the day, Theo and company won't win with Jim Hendry's players.  And that's the way they want it.
• Don't worry about Ryne Sandberg's feelings.  Sure, he's a Cub favorite and has succeeded in the minors, but he may not be the right guy for what Theo has in mind.  Besides, if you want to see a fan favorite go down in flames, root for the team on the South side. The truth is, under a new regime, it is usually the second guy hired as coach or manager that succeeds.  Remember Doug Collins?  Jerry Manuel? Grady Little?
• Don't expect to win next year.  Rebuilding takes time.  Radical rebuilding takes longer.
• Don't look at Theo as a savior.  Many before him have tried and many have failed.  Let him prosper or crash on his own without the labels. Remember how excited you were when the Cubs hired Dusty Baker and how many of you couldn't wait to drive him to the airport after the 2006 season?  Or Loumania in 2007? (where the guy went on to quit on the team in 2010?)  Just take a deep breath, relax and let it take it's course naturally.
• Start connecting the dots: Who do Theo and Jed Hoyer know, what players do they value, what coaches have they worked with in the past.  This may give you some insight into who they might go after.
• Culture change is different from regime change.  Regime change builds on positives already in place, tweaks some things and continues to advance the ball.  Culture change guts everything and totally changes it, from the deep minors to the big league team.  Every organization has a deep roster of instructors, coaches, managers, scouts, etc.  With culture change, comes changes all across the levels so that "the Cub way" as I'm sure it will be called, will begin the moment a player signs his contract. This does not happen overnight.
• Don't assume that you've heard the last of Crane Kenney.  He's still in there, playing the role of Number Two (without the eye patch.)
• Don't expect Theo to be perfect.  He's made mistakes before and is leaving Boston under less than ideal circumstances.
• Don't assume that Tom Ricketts isn't going to be involved.  Owners are sensitive to their egos and their perception of what they think the fans want.  Ricketts will definitely stick his nose in where it isn't needed.  But then again, you get to do that when you own the team. The good news is he seems like a pretty sharp guy and would make sure that his brother Todd will not be made third base coach.

You first day at your new job is always your best day and it goes downhill from there.