The approach to learning to skin is mixed in it's ability to explain, deploy and systemise in a manner that is easy to follow.
Partially this is due the freeform elements of design yet the requirement to fit within the infrastructure of the DotNetNuke working environment.
xdDesign provides resources such as free skins, free videos, articles, how to's, podcasts, reviews and more but for detail specific to skinning on our dedicated skinning website - http://www.dnnskins.com and is the resource location we have designed to allow an environment for learning, and engage different skilled people including graphic designers, CSS experts and online resources to help you learn.
Much of the information is free, but there are elements of premium content since we also pay to have the site developed, and to make it sustainable, need to ask our audience to invest in us as well.
What you will get is an amazing range of resources that have been captured over the last seven years where for at least six of the seven years, it's been nothing but DotNetNuke.
Nina Meiers is an active contributor to this process both within the core team, the forums, and personal assistanc via email a phone to many many people who have been simply stuck in getting their skins finished. Nearly all this has been done free of charge as a committment to assisting the growth and uptake of DotNetNuke.
But this can't be all done by one person, simply because there is so much to tell, but more than that, the absolute diversity you find with design is left to so many methods of interpretation and therefore requires different ways of being told. Having said that - we are working on better methods of displaying information.
If you would like to know more about how to skin - you can visit skincovered.com and check out the forums - or you can visit our forums, and look at how we've done things.