I want to know if I root my device, do I have the same ROM, which means having Android Gingerbread 2.3.5 even after rooting? Also, do my apps get deleted or does it happen to have any bug or even worse bricking the phone?

The main thing I want to know is if I still get to use Gingerbread.

Also, can I delete apps that come with the device when bought, that can’t be deleted? Or even moving apps (like Facebook app), after rooting?

Also, to close, how much is secure to use this guide:

http://www.htcwildfiresblog.com/2012/03/guide-to-rooting-htc-wildfire-s-235-s.html