OLB's reading QB vs linemen, spot or near back.

here are our reads: read near back path to near OL for pass only
Inside To: Bounce / Crease ( stay and look for the ball to bounce to you or hit the crease off tackle )
Outside To: Force ( two yards behind TE or OT )
Away: Cobra ( shuffle to stack behind nearest DL and play cutback/counter , bootleg, reverse by looking for color coming back; look behind the center at the spot )
we play ours very aggressive vs. the run. on pass downs we move back and wider.
vs. a wing or slot: he is our near back
Eyes: force
Ear: Spill ( come off of his butt and attack down the LOS and wrong arm the blocker through his crotch )
Away: Cobra
Not looking at you: Pass

just my two cents

Here's a simple read that has been very effective for us. We use it with our DB's, but I'm sure you can use it for OLB's. Read the UNCOVERED lineman (the lineman who has a LB over him). If the lineman fires out across the LOS, the play is a run. If the lineman DOES ANYTHING ELSE (pull, cross-block, retreat, etc). play pass first and then react to run. The reason we went to this was that our DB's were seeing pulls on bootlegs and playing them as runs. The one that really hurt us was the OT's down-block and OG's pull on wing-t waggle. If you go back and look at your films, I'm sure you'll see that this is a simple, effective read.

We tell our kids that if they're not sure what the lineman is doing, play pass first. We would rather have them give some ground than give up a TD becuase they ran up the field and the ball went over their head.