The best thing you can do is read the docs, particularly the
[Introduction] (Introduction | Qubes OS) and Getting Started
If you can, install Qubes and get used to it, but do not use it for any
I never presume to speak for the Qubes team.
security critical activities. Make sure you are able to do the things
you want to do, and yo are able to use Qubes properly.
Take your time.
Read the Forum and the mailing lists - there’s lots of useful material
When you are happy, wipe the disk and install again, and start to use
the system in earnest.
When I comment in the Forum or in the mailing lists I speak for myself.