Prestashop has been growing and improving extremely fast, both in number of users / forum members, and in development / features added.
A good resource to start with is the new book "[PrestaShop 1.3 Beginner's Guide]", it goes though all the important features in Prestashop and guide you towards getting your shop online and having your first sale in one week.
In addition to doing technical review for the book, I am also an English Moderator on the Prestashop forum, and I see people with no programming or website development background manage to install and customize their own shops, add themes, modules and modification with little or no help.
The [Prestashop forum] has been growing rapidly as well, it reached nearly 90,000 members, and is by far the best place to get help or questions answered, usually within a short period of time.
Make sure you search the forum first, because many questions have already been answered…