[Q] I took a break when that whole steam authentication stuff was happening, could anyone answer some questions please?

1. Do I still need to enable steam authenticator to be able to trade anything without having to wait?

2. How does automated trading work now using bots etc Since I would have to manually auth stuff on my phone it kinda defeats the purpose...

3. Could anybody fill me in on anything else I might have missed with the whole steam auth thing, because I'm really not sure exactly how it works and yes I have read all the FAQs etc.

4. I've heard of the steam desktop auth but I can't see much info about it.

Thank you in advance for any help?