Good tutorial on Serial from Saleae (working with microcontrollers)

Here's a good tutorial on serial communications, particularly if you are working with microcontrollers.

• Learn Asynchronous Serial - http://support.saleae.com/hc/en-us/articles/200284509-Learn-Asynchronous-Serial

I want a Saleae Logic 8 for Christmas.  They look pretty neat.