Gift for my boyfriend who is converting to Catholicism?

I'm a lifelong Catholic, and my boyfriend whom I have been with for nearly a year is seriously considering conversion (this was his own decision, I brought him to mass a couple of time and he took it upon himself to learn more about it). I would like advice on how to guide him in the process. I was also thinking of getting him a gift to help him along the way. What should I get him? A Bible, Rosary, another book about Catholicism? Thanks!