If you do get a logbook already, make sure it's the right one. There are subtle differences between the way the US FAA and the Europeans (JAR-FCL / EASA-FCL) wants things logged. So you have to get a logbook that is JAR-FCL / EASA-FCL compliant - just getting a generic one from a US pilot shop might be a waste of money.
My trusty FAA logbook has lasted me 13 years so far and the CAA have never had an issue with it....I also log Decimal time as I can't add up HH:MM
