The way I see it, there are two issues at play here.
- Discovering features of Everdo
- Learning the good GTD practices
When it comes to (1), I think there needs to be a complete reference manual to the app. At this point Everdo Help / User Manual / Documentation does an OK job of highlighting some of the features. I believe some of the features you mentioned are in there. The link to this manual is in the help section of the app. The problem is that it’s not a complete manual. Once the functionality across platforms stabilizes, it will be redesigned, updated and linked everywhere.
Once you know the features, I think it should be sufficient to just follow your methodology of choice, such as GTD. I don’t think I have any special insight here. I just try to follow GTD the best I can. There might be a section in the manual on implementing GTD. I guess that might help.
When it comes to the format of the manual, I would much prefer text over video for many reasons.
There is. There’s a ton of development to get done, which well benefit every single user. And creating a high-quality manual (let alone video tutorials) is a big time drain, especially when the software is changing.