Train advice for July: Zurich-Berne-Murren-Zurich

Here is the absolute beginners guide to Swiss trains - there are lots of them.
This is a map of Swiss Railways: https://www.sbb.ch/content/dam/sbb/de/infotexte/uebersichtskarte-sts.pdf
The red lines are rail routes. It does not show all stations, there are too many of them (1838). Every rail route and every station has at least one train per hour, often two.
It is designed as "turn-up-and-go service", you turn up at the station whenever you want, buy a ticket (if you don't already have one), and get on a train. Easy. There will be a train

Tickets are valid on any train on the date shown on the ticket. You do not need to pre-buy.

You can look up times from anywhere in Switzerland (any one of the 1838 stations, or any bus stop in Switzerland) to any other of them,on the SBB (Swiss Federal Railways) website here: https://www.sbb.ch/en

For your relatively few trips, I would either just buy tickets on the day, or get a Half Price Card (CHF 120), which allows you to buy your tickets half price.
See here: https://www.sbb.ch/en/leisure-holidays/travel-in-switzerland/international-guests/swiss-halffare-card.html

A hint when looking up times, the stations have the same name as the town, in the local language. For example:
Zürich Flughafen (= Zürich airport)
Zürich HB (the main station in the centre of Zürich)
Bern
Mürren (note the ü, if you don't have a ü on your keyboard, alternative spelling: Muerren)

I would certainly choose the one-month Half-Fare Card for visitors over paying full fare. Lift prices can add up during your stay in Muerren. If you're considering the Swiss Travel Pass, then they do exist for short trips, e.g., covering 3, or 4, or 8 days of travel, either to be used consecutively or to be spread out within a month, and prices different for each scenario. Maximize the value of each day by making use of extra bus/boat/lift/museum coverage and discounts. The flexi-style passes do not offer any benefit in between counted travel days.

Thank you!!!!
One more question - can I buy the half price card at the Zurich airport or in Berne?
Or should I buy it online ASAP?

Zurich airport. The Half Fare Card will pay off if you have 240 CHF of full fare tickets. Looks like you are to spend a week in Bern. If you use public transit, and are not staying in a hotel that gives you local transit cards as part of your stay, you can buy half price transit tickets. When you buy tickets out of a ticket machine, just select the Half Fare option. You will need to have the Half Fare Card with you if a ticket inspector checks your ticket to show you paid the proper fare, otherwise you get fined for having an invalid ticket.

Sorry for this naive question but....Do I need a separate Half Price Card for both myself and my husband or will one Half Price Card be good for two people?

No, each must have his/her own. Other wise only one person on the train would need one and everyone else would say "I'm with her." :-)

To emphasise the point made by Sam above - if you stay at most hotels in Bern you will be issued with a complimentary Bern Ticket which gives unlimited use of the trains within the city (as far west as just past Westside for example), all the Bern Mobile buses and trolley buses and trams, and the elevator down to the river area, and the two funiculars down to the river area (one by the bears, free to all, and one behind the Parliament buildings), and the funicular up the Gurten.

If you aren't in a hotel I don't know if you will get the card.

Are you in Bern for business? That's quite a long time in Bern.

The free card does not include nearby cities or towns such as Thun or Murten.