any left guards out there? got any good tips?

Answer 1

What sorts of tips do you want? Technique? Plays to watch out for?

Here's the best tip I can offer you, without you posting more information using the edit question function:

Stay in your scheme. Don't think just because somebody is stunting that you have to block the man who was originally in front of you. Chances are good that that man is the center's responsibility now. If you think the center will be overwhelmed, move to help him out, but don't lose track of the other half of the stunt.

And, for God's sake, NEVER STOP MOVING. Don't just stand around because you think there's nothing going on, or because you think there's nothing you can do about the guy who just got past you. If your quarterback cuts back across the pocket towards you, there's nothing he'll love you for more than a good peelback block that gives him time to get rid of the ball.

So that's it. Stay on assignment, and never stop moving.

Answer 2

I wish you'd been more specific.

Stay low, fire off the ball, and never jump before the snap. Not sure what else you're looking for.

Oh, and never look where you're going to go to block or you'll give away the play.