How CQ (Till CQ5.4) Starts when you click on quickstart jar file

1. the quickstart is unpacked to the crx-quickstart directory
2. then cqse is started
3. cqse starts the crx webapp
4. the crx webapp starts the repository
5. during repository startup, it checks the repository/install folder for content packages and installs them
6. then the launchpad webapp is started
7. felix starts the core bundles
8. one of the core bundles is the JCR installer, which searches all 'install' nodes in the repository and registers those bundles
9. felix starts the newly registered bundles
10. As a part of newly started bundles CQ apps load

Thanks Toby from Adobe for this information