This is a video series by Steve Gordon and is well done. I wanted to understand the cryptology underlying Bitcoin and found this series after fishing around on YouTube. For my purposes I started off with the 11th lecture in the series that details the number theory required to understand encryption. I have embedded the 11th lecture in the series below and it starts with lecture 11 but it is only one in the CS322 lecture series and the series is probably better viewed by going direct to YouTube.
I received a package today containing a cell phone protective case. On the outside of the package it had Ruby has Fulfillment on it. The package arrived very quickly after clicking through on eBay. Ruby has Fulfillment is a fulfillment service that stores your stock and ships as required. The following is a screen cap from their website.