Reddit reviews Schaum's Outline of Optics

I'd suggest you buy your textbooks early and look them over before class starts. If you don't want do to that, you might want to try out Schaums Outline of Quantum Mechanics, and Schaums Outline of Optics. A Modern Physics course will generally cover some intro QM and some special relativity, so the QM outline should be helpful for both your Modern Physics and your QM class.

Edit: As a note, the Schaum's Outlines are generally for people currently taking the course or reviewing the material after having already taken the course. Its terse with little discussion of the physics going on, but a lot of example problems, and will hold your hand through math.

Finding online resources for non laser optics is a pain (laser optics however have plenty of resources from the laser manufacturers). Luckily, there is a free PDF text put out by BYU.

If you look around you might be able to find a PDF of other optics textbooks (not that anyone would condone or encourage the ways you might find them), I recommend any book but Hecht (I mean, I guess Hecht will do but it's the worst textbook I've ever used). If it is price that is the problem with buying books try the fairly cheap Schaum's outline of optics (funnily enough: written by Hecht, he is capable of explaining things just make sure to keep him on track I guess). If you can find a copy of Pedrotti somewhere I have heard it is passable, though no optics text is very good from my experience.

There is the Schaums for this topic too, also by Hecht, I used it and found it covered everything I needed.

http://www.amazon.co.uk/Schaums-Outline-Optics-Series/dp/0070277303/ref=sr_1_1?ie=UTF8&qid=1411390423&sr=8-1&keywords=schaums+optics