Hi,
If you are looking for more of a high-level overview, you might benefit from the information on our website. Try this link:
http://www.componentone.com/Products/NET/Preview.aspx
Otherwise, the information in the .chm file (or the combined help collections) should be enough to get started. There are some good tutorials. You could start with the "C1Preview Quick Start" section.
If you have any specific questions you can always contact our support team. You can submit an incident over the web at http://www.componentone.com/SupportCenter.aspx
Thanks!