What questions are you struggling with specifically? A lot of in/out games seem a lot more difficult than they really are (birds in the forest and mauve dinosaurs, specifically) because you have to play the spaces rather than try and figure out what goes where for each and every question.
For example, if I have a "If Bill is at the game, then Jenny is also at the game" and a "If Donny is not at the game, then Larry and Kellen are at the game" and there's only four "in spaces" you might be tempted to try and fit Bill in first (because it's easy to add Jenny for an easy space), and worry about Donny later.
You should actually do the opposite. Worry about Donny first. Is he there? No? This question just got a lot easier. Yes? Then the Larry/Kellen play a huge role in this.
You'll see stuff like, "If Caleb is at the game, and Patrick and Donny are not at the game, which of the following must be true?"
a. Bill is not at the game
b. Larry is not at the game
c. Xavier is at the game
So this now becomes easy:
Donny's not at the game, so you immediately add Larry and Kellen. Plus Caleb, that's three people. So you're never going to have Bill, since he'd require Jenny.
Furthermore, on super detailed in/out games (specifically picwhoring friends. effing Raimundo.) use the contrapositive to your advantage throughout all the questions. If, whenever W is in the picture, T and R are both out, and the next rule is: if Y is out, then R is in, you can contrapositive the last rule to when R is out, Y is in. Thus, W ->
R -> Y, or, more simply, W -> Y