Boost your Digital Knowledge - free training directly from Google
I came across some free learning from Google, which I think may help people here at WA who feel that they want to learn a bit more about Digital Marketing.
I like it because by answering a few basic questions, which help frame what you want to learn about, Google will provide you with an individual learning plan that you can go through at your own pace. All you need is a Google account, which most WA members set up as they work through the lessons.
It's completely free, you can jump around to pick out specific sections and it's straight from Google - I think it's a good resource.