Try to work with books which have exercises - such as "Structure and Interpretation of Computer Programs" (http://mitpress.mit.edu/sicp/full-text/book/book.html

Try to work with books which have exercises - such as "Structure and Interpretation of Computer Programs" (http://mitpress.mit.edu/sicp/full-text/book/book.html http://mitpress.mit.edu/sicp/full-text/book/book.html), "Introduction to Theory of Computation" (http://www.amazon.com/Introduction-Theory-Computation-Michael-Sipser/dp/0534950973/ref=dp_ob_title_bk http://www.amazon.com/Introduction-Theory-Computation-Michae...) or "How To Design Programs" (http://www.htdp.org/ http://www.htdp.org/). Keyword here is _work_.