Hi all,

Im just wondering if anyone can recommend a way to easily make something similar to a wiki page (that has hyperlinks and a contents and easy redirects etc) that is able to hosted online somewhere, edited by multiple people on multiple platforms, but also be able to put on an external drive and opened on anyone's computer? (some sort of automatic updating would obviously help here, but as long as a master was available somewhere, it's not too essential).

I have a decent knowledge of HTML (but that's it) and realise I could probably use google docs to do this, but just wondering if there might be an easier way.

Perhaps if I explain myself better:

I am wanting to write a business plan, with three other people. We are three of us using Mac, one using windows. 
I would like to be able to collaborate on this document with all of us, at any time.
I would ideally like to be able to see who has edited what and when, but it's not a deal breaker.
Two of us aren't especially computer literate, so being able to link to other parts of the document, and navigate, edit, and use easily would be a bonus.
Having a "contents/menu" like Wikipedia that a user can use to quickly navigate to other parts in the document would be ideal.
It would be nice if I could then put the document on to a flash drive and be able to open it on any computer as if it was a wiki using something fairly generic (word, safari etc).
Being able to present this business plan in this sort of format is really the reason I am wanting to do it this way. 

Is there some easy program like this that I just have overlooked? Or should I just harden up and use my HTML skills within word / google docs?

(edit: basic spelling mistakes)