My beloved 2001 Litespeed Tuscany and my 2014 Cannondale SuperSix EVO Hi-Mod Team bike
Welcome to BF.
Depends on the type of bike you're looking for.
General Cycling has general info.
Mtn Biking has good info on mtn bikes.
Road Cycling has good info on road bikes.
Commuting has good info on commuter bikes.
Then there's folders, tandem, touring, cyclocross, fixie/SS, recumbent, etc.
And since you're from Scotland the UK and/or Europe Regional subforums may also be helpful.
When the spirits are low, when the day appears dark, when work becomes monotonous, when hope hardly seems worth having, just mount a bicycle and go out for a spin down the road, without thought on anything but the ride you are taking. — Arthur Conan Doyle