I finished Aquinas's Shorter Summa yesterday, and started Interview with an Exorcist. It's a very short book, done in a question and answer format. Interesting, which I say a lot, but I find so much to be interesting! There were some things in there that I'm unsure of the orthodoxy of, but the book lacks an imprimatur or nihil obstat, so I'll double check those things, but they're not really hugely important.
Now I'm on to Scott Hahn's Hail, Holy Queen. This is actually one of the first books I'd picked up when I became interested in Catholicism. Coming from MS Lutheranism, Mary wasn't as big a problem for me as she evidently is for some others, but I wanted something simple to read that explained where the Church found the evidence for their doctine's and dogmas, and this book came well recommended. I still enjoy it.