Good going to answer all these technical specifics Gareth!
Just one point to add about documentation for your info, (as the former 3B2 Senior Tech Doc Author @ Advent3B2)
'Most' of the main technical documentation/user reference content is published, all be it in a help center format from which you cannot always find items through standard global searching (as many docs stored only as PDF). Nore has the main ToC been organised particularly well which does not help anyone. Therefore to get the most from it you do need to know a little about what feature area your looking for, hence training/mentoring & support.
Some of the detail and content in previous documentation archives was left out when the new format help center came in in APP V9.1, but this can still be accessed in past installers and some online repos! One useful resource for new UI Desktop users that was never updated from 3B2 version 6 is the traditional user reference manual, also still available from reputable resellers!
PTC have not had much in the way of up to date training material for user consumption since they aquired Arbortext+APP in 2005-6, hence it was left to specialist partners to create and maintain this material and provide the service, in many cases on their behalf. However i believe something new is in the pipeline from PTC Arbx Product Management, aimed at new users learning V11 exclusively through the newer JS FOM API, expected sometime this year.
For the past x number of years we have writen and maintained our own set of extensive training/reference materials on all of the traiditional and JS FOM areas for both new and existing users migrating to new versions.