I recently got added to the company's PluralSight subscription and have found the content and presentation to be quite good. It helps when your employer is forthcoming about their future plans for which you can use as a learning path. There is also a ton of material on YouTube; both from Microsoft internally and from recorded presentations at PASS, user groups, etc. The hard part is deciding what to learn.
In the age of the internet, if you're not learning, it's because you're not trying. The combined efforts of the government, your employer, and Google couldn't block a curious person from learning. Accessing information is what we do for a living.