user4708: Is there any blog or document that gives a basic "tour" or "overview" of the Satoshi code?  I could just dive in but it would help to read an introduction first.

user7043: Take a look at the Bitcoin protocol specification and in more general the Bitcoin wiki. Also, the original paper of Satoshi is a good read.
EDIT: I recently found an article on Bitcoin Talk about the Satoshi client code structure. It's an interesting read too!

4708: <p>Is there any blog or document that gives a basic "tour" or "overview" of the Satoshi code?  I could just dive in but it would help to read an introduction first.</p>
 7043: <p>Take a look at <a href="https://en.bitcoin.it/wiki/Protocol_specification" rel="nofollow">the Bitcoin protocol specification</a> and in more general <a href="https://en.bitcoin.it/wiki/Main_Page" rel="nofollow">the Bitcoin wiki</a>. Also, <a href="http://bitcoin.org/bitcoin.pdf" rel="nofollow">the original paper of Satoshi</a> is a good read.</p>

<p>EDIT: I recently found <a href="https://bitcointalk.org/index.php?topic=41718.0" rel="nofollow">an article on Bitcoin Talk about the Satoshi client code structure</a>. It's an interesting read too!</p>
