Don't Forget Search
Remember, the search function can help you find every occurrence of any subject that you are looking for. For example, entering the word "atonement" into the search form in the upper right will yield dozens of results that will save you hours of time. This is especially helpful if you are doing a study on a specific topic.
Or you simply can't recall a great quote from the book, but you think it was by Charles G. Finney. Just search for "finney" and you'll receive results for every quote from Finney in the book.
If you want to do advanced searches, just click on the "Advanced Search" link and go to the the Search Page. Then click the "Advanced Search" drop-down. Advanced search will always be available from the search results page too if you need to refine your search.
Google Trick
Here's a Google search trick that you may not be aware of. In your browser search (if it's Google) or on the Google search page, enter this into the search box (assuming that you are doing a search on the "atonement": atonement site:thegodtheyneverknew.com
In other words, put your search term first and then follow it with the keyword "site:" and this site. You will get back a results page(s) that will include every instance of your search term from this site only!
