For example, if you're from the UK and travel overseas, you'd need to connect to a VPN server in the UK to get a UK IP address. Providing this IP address hasn't been blocked by Bet365, you should then be able to access the same betting markets as you would back home, regardless of your current physical location.
Fractional style shows as one number over another number. For example, you might see bet365 odds at 10/1. That means that for every $1 you bet, you'll receive an additional $10 for a winning bet. PGA odds are displayed in this format by default. Lastly, you have decimal format.