Index and chapter

Hello everybody, I need to create a new user manual for a new product.

Well, I'm tired to create it in OFFICE WORD and I wanna switch to Corel X8, it's woonderfull for the layout but I have some problem with the text tools, eg how can I create an automatic updating Index for my book?
I need also, to link the caption of the images to the current chapter.
Have somebody some idea?

Thanks in advace!