No official way to make Debian Live USB "persistent"?

[kaye n <guikaye@gmail.com>]

Hello Friends!

Correct me if I'm wrong but there doesn't seem to be an 'official' way of creating a Live USB Debian that is 'persistent'.

If I google it, I get instructions from other websites, like this one:

http://cosmolinux.no-ip.org/raconetlinux2/persistence.html

1. Do you think it's wise to follow the steps on that web page?

2.  Please confirm my understanding of 'persistence'.  If I boot a Debian Live USB, connect to the internet via wifi, download gimp, vlc, kdenlive, and freecad, and then I shutdown down the computer and boot the Live USB again, the Live USB Debian would remember the wifi password and connect automatically, and gimp, vlc, kdenlive and freecad would all still be there.  That is persistence, yes?

Thank you very much.