In reply to David86:
There's lots of good info online that will help along the way, but winter climbing is definitely one of those areas of life where's there's no substitute for learning 'on the job'. In some respects, getting from the bottom to the top of a particular bit is the easiest part of the day - judging what is an appropriate round given the weather and snow conditions now and over the past weeks, having good navigation skills and the confidence to use them, even learning how to manage yourself and your kit to keep everything safe and warm are all important as well.
I think just about everyone who's out and about on the hills in winter has had the opportunity to learn from their own screw ups, but the ideal situation is to get yourself in tow with one or two more experienced folks who can help you develop the knowledge and understanding in as safe an environment as possible. You may already have done this, but getting involved with organisations like the Scouts, Cadets or similar might be worthwhile, as they tend to have well-developed programmes for introducing people to the hills in summer and winter.
I'm 50 now, so hopefully I still have a good few years left in the hills yet, but if I have any regrets about the last 30-odd years of hillwalking and climbing, it's about the stuff I didn't do, rather than the things I have. If you have dreams and ambitions, then pursue them, however daft they seem to other people.You might not achieve everything you want to, but nothing guarantees failure more than never getting off your arse to try anything at all.