I would go with "How to design programs" - looks at the beginning to be siplistic, but it gives a lot of understanding about lisp like languages.

Then I would go with SCIP and then Koans.

I am treating lisps as a kind of mind game (I dont like crosswords :) so I do Lisp) since I cannot use it for everyday job so from my point of view Scheme and Lisp are not very different. There is different approach to things like mutable state and other more advanced concepts, but basics are the same.

If you want to have at least an illusion of learning Lisp that can catch up one day, learn Clojure. Or go with Scheme's ugly duckling son - JavaScript. :)