chan book(million dollards limit cash..) what limit?

[Montrealcorp]

hi,in his book,chan says the concept describe are for high limit games starting at 20/40...
but i feel he describe 20/40$ live games
some of the play and situation appeared more often in those games and need a thinking player for the concepts describes in his book to succeed...
well it seem that online,the limit are seriously different then live games!
U think 2/4$ online is a good limit to start to apply the concept written there or u need a higher limit like 5/10 online to apply the concept regularly since at those level,thinking player are the norm compared to .50/1$ or 3/6$live game i hear...?
ty