Jul 4, 2016 - 4:33 AM
Hi rachelerae, welcome to MySwissAlps!
I also think the Swiss Half Fare Card is a good idea. Whether it's your best option can be found out by listing all your trips and doing the math as explained here. But the Swiss Half Fare Card is definitely a good option. All details are here: myswissalps.com/ swisshalffarecard.
The easiest way to purchase is to go to www.swissrailways.com/ en. After filling out your address, they will show the delivery options. Pick "Online Ticket" from the bottom of the list. They will e-mail the pass (no delivery fees), so you can print it at home. Once in Switzerland, you can get discounted tickets from the machines or ticket offices.
Tickets allow you to get off the train anywhere you want and continue traveling later that day. How long you stop in each place is up to you. The small villages you mentioned are not really sightseeing places (no monuments, museums, etc.). They're more like a base to start or end hiking.
Please also see myswissalps.com/ jungfraujoch/tickets.