This book of Michel J Pont is really a very good book. It 'll build your embedded C skill, but for PIC u have to go through other books related to PIC. Already many books are uploaded here related to PIC. U can doenload.
You can download the same book and many other books related to PIC, AVR, ARM and 8051 from www.rickeyworld.info. and there are many code examples, libraries and projects.
Hope this will help you all needy ppl