Originally Posted by
Navmode
There are general materials available online, however every company makes up their own aircraft limitations. In my opinion, It would be a detriment to your training to have to relearn the same things with different numbers in class. Just be sure you know how to read plates and brief/fly approaches without any hiccups. Some people that didn't fly ifr much ran into brick walls, because it's enough to be learning a new (and in most cases more complicated) airplane without turning it into a basic instrument lesson.
They provide you with all the info/materials you need. You will have every opportunity to be successful if you have a good attitude and put in the effort.
I agree with everything he wrote.
Just wanna add a few more things. The training department is very good at Mesa. They will provide you everything you'll need for Indoc and systems. No need to preview much before you get there.
However, they do expect you to be not only instrument current but instrument proficient. Know your jeppesen plates. When you receive the profiles and call outs study a lot with your sim partner. If you have those memorized it'll be easier for you in the sim.
Never let up when you're in training. You can't afford to take a day off. Everyone I've spoken with who has recently gone through have said similar things. And, they've all had a good experience.