Ok, I main try to help you for usability testing, I'm not an expert on that, but I think I have some solid knowledge of Usability.I don't know how you plan to earn money from the service, (I guess from advertising or some kind of premium service), but I can take an Hour off for that against a donation to any NGO (unesco, red cross, soudan or whatever help in third world countries) whenever you want and how much you want, as it's something about God, I have no concern you won't do that by time. I'm in the same situation like you so,it's a pleasure to help. It will definitely take more than 30 mins , if you need improvement suggestions as well, for example, when somebody click on the title bar,to jump to the next day, it count it like a completion (you should compute the average time took to read a page and compare it to the time spent on the page before loggin it as progress), you may move the create account stuff (call to action) at the top (I still have to figure out where exactly, but you can check this: http://www.bibleserver.com/index.php), The layout is excellent, and I like the color, well I really won't spend that much time for any additional design and stuff like logo (peoples who read the bible don't really care about how well the site where they read it is designed, it's just distraction and the last thing you need on that kind of sites), well don't know if I said it already but, I love the layout. The next and previous option could be done better, can't help you about the Fonts. That's my 2 cents contribution, when I have more time, will take a look again. There's still room for improvement. I will probably been using the site, love it. Good luck.