I’m a junior in college, and when I first began looking into Catholicism I found By What Authority (Mark Shea) very helpful. It effectively destroyed any faulty foundations I was basing my prejudices against Catholicism. Also, Catholic and Christian by Alan Schreck. I was already convinced by the time I bought this book, but I wanted the tools to defend my choice intelligently
Neither book insulted my intelligence, but they were also light enough reads that I actually finished them. . .I’ve been preparing for finals and practicum evaluations for a month or so now and anything heavier would have been placed on the back burner post haste.
When I first began researching I also devoured the Ask an Apologist forum for weeks, just learning some of the day-to-day things that might not be covered in books I read. Hope this helps.