Information and Resources for the Pluralsight Course jQuery: Getting Started by Craig Shoemaker.
This course is published and up to date.
You can download jQuery directly from the website where you have the option to do a direct download, use a CDN or get instructions on downloading it with Bower.
jQuery is available in version 1.x and 2.x. Select version 2.x if you do not need to support Internet Explorer 6, 7, or 8 - otherwise version 1.x is for you.
The code for this course is available from Pluralsight with a paid account.