[SOLVED] What should be the steps I should follow to best use ProjeQtOr?

I have finally got ProjeQtOr started... Now I am confused to see so many menus and possibilities

May be confusing as you connect as Admin, with acces to every screen.
You can parameter (Parameters > Habilitations > Access to screens) which screen will be visible for each profile.
Try and create a project member user and connect with this login : you'll see fewer menus

a) Use of Tickets should be a good idea
b) Use status, with workflow management to define which profile can approve Ticket
c) Copy Ticket into An activity, an possibly change project, or create new project from Ticket and link Ticket as Origin (you can copy a Project Template with standard structure to ease creation of project)
d) Assign resources to activity
e) Normal lifecycle for activities
f) Testing can be simply an Activity or can be managed through Test Sessions (if you manage test cases into ProjeQtOr)
g) Acceptance may be an activity
h) Normal lifecycle for Project

Yes, you have to create Project First.
ProjeQtOr is a project management tool, so everything is linked to a project.
Moreover, access rights are project driven.

But you can create a "fake" project for incoming tickets if you don't want to define project at first

ProjeQtOr will not force the workflow, like Jira will do.
You will design your own workflows, that can differ for tickets and for activities, and than can even differ depending on the type (Support ticket may not follow same workflow as Anolamy ticket or Changez request tickets)