day trip out of Amsterdam

My husband and I are looking forward to visiting Amsterdam in August. We are thinking of taking a day trip to Delft. For 2 travelers, is there a particular train ticket we should purchase? Mainly, we want to walk around, experience the city and learn about the pottery, etc.

It seems that den Hague is relatively close by Delft. Is it feasible to visit both in one day? Is there a trolley that goes from one city to the other? Again, we plan to walk around, just experience both cities, not necessarily visit museums (although we are open to that as well).

Thanks in advance for any advice offered.