I wouldn't advise soloing stuff in winter if you've no previous experience to be honest. If the age in your profile is right, there are a number of options for courses that will be in budget, as you can get them either free or heavily subsidised by awards that aim to teach people in exactly your position. I did a week long mountaineering course with Plas y Brenin which was subsidised by the Godfrey Jackson Memorial Award, bringing the cost to something like 1/4 of what it would have been otherwise. The Brenin are also the providers of the well known Conville courses which run in both Scotland and the Alps, again for the younger mountaineer looking to get started. Both these are listed in the link below...
http://pyb.co.uk/awards.php
Another option is joining the Austrian Alpine Club (UK section, link below), which will cost you £36 as a Junior member and give you access to potentially fully subsidised courses (mostly in Austria, but I think some are UK based). Being a member of the AAC is also a generally good thing due to their membership insurance (although it's not a normal travel policy, so have a look).
http://aacuk.org.uk/
Go on a course [above], join a local mountaineering club[1], uni mountaineering club if you're going, buy/borrow winter skills books [2], go to one of the BMCs winter skills lectures [3], buy the BMC DVD [4] or find a partner on here [5]. Plenty of options that won't break the bank. But I would avoid going on your own (at least for now), you'll have far more fun with a mate/someone you trust.
[1]
https://www.thebmc.co.uk/map
[2]
http://www.amazon.co.uk/Winter-Skills-Essential-Climbing-Techniques/dp/0954...
http://www.amazon.co.uk/Mountaineering-Freedom-Hills-40-Experts/dp/19040572...
http://www.amazon.co.uk/The-Mountain-Skills-Training-Handbook/dp/1446300978
Plenty of others, just a selection of the ones i've owned/read
[3] actually you've missed these this season but they'll be back next winter -
https://www.thebmc.co.uk/sharpen-your-skills-with-a-bmc-winter-lecture-this...
[4]
https://www.thebmc.co.uk/winter-essentials-dvd
[5] try to climb with prospective winter partners before making a big trip to Avimore only to find that you don't really get on or they were completely bullsh*tting about their previous experience etc.
Hope that's useful!