Lessons learned:
1. In Japan, different train lines might share a section of a track and, therefore, a platform. Be sure to check the digital board or the train name before boarding.
2. Inside the train, listen for announcements or check the digital sign (if there is one; some trains in Japan don't) that announces the next stop or check the route map located above the car doors.
3. If you didn't do number 2, as soon as the train stops check the name of the station or station code through the window (if you can see it).
4. And if you still didn't do number 3 and have exited the train, before you exit the station, look around and check for the station name.
Arm yourself with either of these:
If you're old school — Train Route Map
If you're tech savvy — A pocket WiFi and a reliable smartphone with these apps: Google Map and Japan Trains
JapanKnow Before You Go
Single Entry Tourist Visa for Japan
Roam Around Japan with a Swagger
From Tokyo to Hiroshima (2015)
10D/9N | Tokyo, Toyama, Kyoto, Hyogo, Osaka, Hiroshima
Tokyo Accommodation: Shinjuku Airbnb
Tokyo: Memorable Tokyo Eats
Tokyo: Odaiba
Tokyo: Doing Touristy Things in Tokyo
Toyama: A Hamlet Called Ainokura
Kyoto Accommodation: K's House Hostel Kyoto
Kyoto, Japanecdote: Wisdom from the Road: On exits #2
Kyoto: By the Thousands (Kyoto Imperial Palace, Sanjusangendo, Fushimi Inari Taisha, Arashiyama Bamboo Grove)
Kyoto, Japanecdote: Turning Japanese
Kyoto: Braving the Crowds at these UNESCO World Heritage Sites in Kyoto (Kiyomizu-dera, Nijo Castle, Kinkakuji)
Hyogo, Japanecdote: If Only I Could Speak Nihongo
Hyogo: Day Trip to Himeji: Himeji Castle and Shoshazan Engyoji Temple
Hyogo, Japanecdote: Am I an Alien?
Hiroshima: Strolling and Snacking in Miyajima
Hiroshima: Remembering the Past in Hiroshima
Osaka, Japanecdote: How to Lose Friends
Osaka Accommodation: Osaka Airbnb
Osaka, Japanecdote: Where is Bentencho Station? (you're here!)
Concentrate on Kansai (2016)
Kyoto Accommodations: Guesthouse Wind Villa, Shiori Yado
Osaka Accommodations: Hotel Raizan, Hotel Mikado