- The best place to start is https://our.umbraco.org/documentation/getting-started/
- Tutorial on creating a basic site - https://our.umbraco.org/documentation/Tutorials/Creating-Basic-Site/
- Christmas Calendar for 2017 - https://24days.in/umbraco-cms/2017/
- Christmas Calendar for 2016 - https://24days.in/umbraco-cms/2016/
- Christmas Calendar for 2015 - https://24days.in/umbraco-cms/2015
- Jon's Umbraco resources - I've not gone through all of his articles, but some do come up when I search for solutions - http://www.jondjones.com/learn-umbraco-cms
- Our Umbraco - Umbraco Community - https://our.umbraco.org/
- Umbraco Newsletter - Sign up here - https://umbraco.com/
- Skrift - monthly magazine sharing knowledge in the Umbraco community - http://skrift.io/
- Umbraco HQ - @umbraco
- Umbraco releases and announcements - @umbracoproject
- Australasian Umbraco User Group on LinkedIn - https://www.linkedin.com/groups/4136141
- Australian Umbraco Meetups - https://www.meetup.com/Australian-Umbraco-Meetups/
PS - This is bit slanted toward devs in Australia, but do let me know if you know of any other good resources.
**Fingers crossed, I will try to keep this list updated.