If you don't absolutely require the flexibility an Anytime single to allow you to travel on any service at any time, committing to a journey through Advance fare can often save upwards of £100. Also consider railcards before buying any single tickets if you'll be travelling by train often. Check out more trips for train travel here.
Travelling by train in China is an adventurous way to save money while exploring the country. Buying tickets and understanding the class types can be tricky, but this how-to guide works through all the must-know details, including how to read the tickets (which have no English!)
Spain Train Tickets - 4 Tips for Buying Train Tickets on Renfe