First IUI please help

So my husband and I have have been trying for a baby for 6 years and so we starting seeing a fertility specialist, and we did all of the lab work and everything came back perfect. Our doctor says we have unexplained fertility, and our doctor has told us to try for 3 months naturally. Well I had my appointment today after 4 months of trying naturally and our doctor told us we are going to do IUI. Then he also said if my husband and I are unsuccessful after four rounds of IUI, then we would move forward to IVF. So I will be starting my first IUI next month. But my process starts when I start my period next month. But my question is what would be a good book to read for IUI? I always keep my mind occupied by reading. Please help I need recommendations.