Traveling + Rome + Florence

Alright BIG NEWS!!! We just booked a trip to ITALY and I am so excited. I have always wanted to travel aboard and am so excited to actually be going. We are going to be going in April. We will go to Rome for 3 days and Florence for 3 days. Has anyone ever been? If so I need a ton of suggestions.  I am starting to buy items to take on the trip. It looks like over there in April is high 67/43 low. I am also looking into doing tours and making an itinerary.. More to come!!!