If it is the first time to visit Aspose.Pdf.Kit, maybe you should read this post at first.
About how to use the features of Aspose.Pdf.Kit, you could read this wiki of Aspose.Pdf.Kit :
About the list of all the classes, you could read this API help doc of Aspose.Pdf.Kit:
About the .net project example, it will be installed in the "Demos" directory after you download and install Aspose.Pdf.Kit .
Any more suggestions about the users guide are welcomed in this post.