New Coach In Need of a Few Answers

Inside out pursuit basically means teaching your defenders to play behind the ball and not overrun it, giving away cutback lanes. If the ball carrier was running outside to your defensive left, your linebackers want to pursue, "inside out" attacking the ball carriers inside shoulder and forcing him to run into the force player. If they ran to his outside shoulder and he cut back they would give away the running lane.
Obviously your force player to that side would attack the ball carrier on his outside shoulder and turn the play back in.

Squeezing the gap means knocking the blocker back into the hole and using his body to restrict the running lane. If your right defensive end was getting a kickout or turnout block from the Offensive left tackle he would attempt to knock the tackle back and use the blockers body to close B gap while defending C gap himself.

I think we're talking about two different plays here. I'm referring to something like a weakside iso play run at the B gap. The Tackle would likely try to base block the DE trying to widen him. In that instance we would ask our DE to knock the Tackle back and use the Tackle's body to squeeze or close the intended running lane in B gap while keeping his outside arm and leg free to play C gap if the ball carrier bounces outside. We expect the inside linebacker to come fill and make that play in B gap but we want our DE to help him by reducing the size of the B gap if possible. This is probably just a difference in terminology, but we actually tell our DE in that instance to "squeeze B gap." We use this technique when we are on the front side of plays against things like base and down blocks, not to take away cutback lanes. We try to take away cutback lanes by chasing with the backside DE and letting our outside backer play things like boot and reverse.

Against ISV we play it exactly as you have described, we would try to get our hands on the Tackle if possible and turn his shoulders so the linebacker can scrape to the quarterback but our responsibility is to bend down inside and take away the dive.

"Rip" in this instance is usually a call made by the defense to identify the strong side of the offensive formation, so they would call either rip for strong right or liz for strong left. Other teams use other words but there is generally a word that begins with "r" and a word that begins with "l", such as roger/louie or ringo/lucky, ect. Some teams identify the strength based on the TE's alignment while others identify strength to whichever side has more receivers.
ISV is inside veer, which is a dive option scheme. OSV would be outside veer.

FURTHER THOUGHT:

In conventional formations, we always identify the strength as the TE side. But in the spread formations of today that have no TE for the most part, like my 3 x 2 for example, the trips side would be identified as our strength or front side, and the twins side as the backside or weak side.

Coach Easton-TIGER ONE