Don't start with the first one (Color of magic). Pratchett became a lot better over time. Also, stick with it through one book. I found quite a few books child

Don't start with the first one (Color of magic). Pratchett became a lot better over time. Also, stick with it through one book. I found quite a few books childish in the beginning. It is often a journey from "this is silly" over "ok, it has its own logic" to the realization "our reality is just as weird".