^ Uh, okay.
Definitely do some reading on technique but realize that a lot of it won't make sense until you actually practice. Though some basic theory is important there will be no substitute for hands-on. If your program has a simulator see if you can spend some time doing that, it will get you used to working the dials, reducing loops, etc. Don't be anxious about endoscopy because nobody is great at it at first but most everyone becomes competent within a few months.