any chance to have a complete pdf version of the manual ?

i’ve seen that in the" http://wiki.mikrotik.com/wiki/Main_Page "we can build our own version of the manual,that’s great,but if i want to download a complete pdf of that manual where can i find it?

manual is updated every day. there is no PDF file. you need to use the book creator and build a new one. see here how often it’s being updated: http://wiki.mikrotik.com/wiki/Special:RecentChanges

it makes no sense to keep a static file with old information.

if you want something printed, look at the books:
http://www.mikrotik.com/mfm?category=5

Is there an easy way to create a book that has all topics or at least be able to add major sections using Book Creator? For example, I want to add Interfaces as a topic and all of the sub-categories. I don’t want to have to click into every sub category to add them all.

Unfortunately, there are no sub-categories, therefore you need to add them one-by-one