It's a subscription based model and the package I have costs £15 per month which gives me access on all of my devices. The courses are presented by true experts in their fields and the quality of the videos is fantastic. Here is also a transcript dormitory to follow along with. If you pay for a higher level subscription you can download for Offlie use as well as use Exercise files to follow along with.
Check the site out - they offer a 7 day free trial so you can see the full range of videos and try before you buy but if you are serious about a career in IT, you will be subscribing. Ask your boss to expense it, they'll certainly get the benefit!