If those wall books are any indication, it looks like you're sitting on a nice collection. I can appreciate that you are inexperienced in selling comics, but after working with them every day for 3 years, you should have a pretty good idea of what you have. There are only so many ways to sell comics, and most of them have been mentioned in this thread, some more than once. If you really want to sell them, you need to pick one or more and get started, otherwise that collection might end up getting passed on to a 4th generation.
If you want a place to start, why not pick out 5 or 6 key issues and make a sales thread here on the boards to test the waters? Folks here are looking for deals, but they are also willing to pay a fair price for properly graded, quality books. There are no fees to pay, so 100% of the proceeds end up in your pocket. As long as you know how to grade, can spot and disclose any restoration, and price well, you will make sales. Just remember, anyone can get these same books from a number of well established sources if they want to pay full retail, so be prepared to leave some meat on the bone or your books won't sell. If any of those 3 things I mentioned are missing, have someone who sells comics for a living do it for you. You'll come out way ahead in the long run.