If you make a trip to Kobe, you may disembark a train at Sannomiya station. Sannomiya is downtown core of Kobe and you may access to many places from this station. There are three major railway’s stations, JR, Hankyu Railway and Hanshin Railway. And there are three more stations, two of Kobe subway and one of Port Liner. Each station is not a big station and structure is quite simple. But there are many stations and it may be complicated for you. And you may be overwhelmed.
You might be nervous about booking of trains. Online booking is very limited. Most of you have to book your train after you arrive in Japan. Especially if you travel in peak season, such as Golden Week (late Apr to 1st week of May), Obon period (mid Aug) and New Years holidays (late Dec to early Jan), many trains are booked out. You may want to know how busy trains will be before you leave.
Unfortunately there is no way to find it online in English. But we have it in Japanese that is “JR Cyber Station”.
If you use Japan Rail Pass, you have to understand what Japan Railway is. In Japan, there are so many developed railway networks. And especially in Tokyo area and Kansai area, there are many private train companies. Those are NON Japan Railways and are not covered by JR deals, such as JR Pass with a few exceptions.