Welcome @Kazza
- If you are going to continue with DEVONthink, yes you should upgrade to DEVONthink 3. The 2.x line is in maintenance now, i.e., only receiving critical bugfixes for things like crashes on launch. Also, 3 is far superior in many ways.
- Don’t use tags if they don’t fit your way of thinking. Tags, like many things in DEVONthink, are optional. Some people use many; some use none. There’s no right or wrong to it.
- DEVONthink doesn’t support internal mind-mapping, but you can preview mindmap files from minmapping applications that provide a QuickLook plugin. Here’s an example with MindNode…
And one from Scapple…
4. There are no example databases available, but I would suggest reading the Help > Documentation > Getting Started chapter in DEVONthink 3’s manual.