We ( myself , my husband) are flying to Switzerland on April 24th. to April 26th 2015 from Paris. We will reach Zurich on April 24th at 9am. We are going back on April 26th at 8pm flight. We want to take ride through Interlaken to Jungfrau ,and oneday in Lucerne or Zermatt . If someone can advise me the tour plan. Please suggest me which are the best ways to visit beautiful places. Whether rail pass for 3 days will be benificial for my case? How to book railpass from paris?
The suggestions provided here will help you plan your trip. I would suggest to either buy a 3-day Swiss Travel Pass for unlimited traveling, or a Swiss Half Fare Card to buy discounted tickets as you go. Zermatt is too far away for such a short trip, to my taste. I would simply book an hotel in Interlaken or Lucerne and do local trips. Please see here and here for hotel suggestions, and day trip suggestions too.
From France, you can book you pass through www.acprail.com or www.swissrailways.com. You should do that today as there's some processing time required. Please see those sites for details.