Unless you have an unreasonable delay, this should be plenty of time.
As noted, you won't have to clear customs, but you will have to go through passport control and security. Just follow the signs to the B-C gates, which I think are further labeled as Schengen (the name of the treaty that provides for passport-free travel within much of Europe) Gates.
You will then clear passport control and have your carry-ons re-screened. I have never had this take more than maybe 5-10 minutes.
Once you pass passport control, you will basically be in a shopping mall. Some places you might be interested in, assuming a morning arrival, would be the Starbucks, which is just to your left once you enter the main, two-story atrium. For food, there is a cafeteria behind the Starbucks (not great, but open at all hours) and on the second level above the electronics shop is a food court. Once you are past this atrium, the food and shopping options are more limited, so get what you want there.
Also, bring your own gum. The sale of gum is banned in Schiphol.
