I started my fitness journey when I was around 16/17 at my gym at school. I got a book from amazon and did the workouts (only upper body) in order to look good.
This developed into more intense 'bulking' gym sessions with 'the lads' at uni until in the later years of uni I discovered MadCow and Stronglifts, Cory Gregory and GymJones. This is when diet became more serious, my training shifted focus to performance and lower body and I stopped caring about the mirror and more about results.
Now in my late 20s and working I've taken up Crossfit (because i can finally afford it) and love the community and the toughness of a WOD. Being from a more 'squat everyday' and do heavy deadlifts and bench background it's been great to get some conditioning in.