Multi page niche site

hello all

i am new to the game and trying to get my hands wet, have a sh** load of domains, ~100. Thought parking them would do the trick, YEY! $1.50 in a year... anywho!

question.. when making a multi page site on ONE niche, should i have links to all the pages on my site on the index or should i let google drop people on whatever page they land on?

thanks