Mountaineering Scotland runs a weekend training course each winter aimed at those members who commonly take the role of leader within a group, either as part of a club meet or when out with their peers. See here for details of our next snow sports touring weekend.
There is a strong tradition of skiing at Glenmore Lodge, which offers a range of courses in ski-touring and off piste skiing, from introductory to advanced level.
If you are looking for like-minded people to get out with and share your adventures, there are several clubs affiliated to Mountaineering Scotland who encourage and support snow sports touring.
The following books and website may help you with your planning: