I am a CS:GO/Game trader and would like to know if I can trade when my steam guard is disabled?
You can trade with other users without Steam Guard, but your trade will be held back for 15 days! But you can't create steam market offers in this period.
If you are using the Steam mobile authenticator, you can complete your trades immediately. However, if you activate the mobile authenticator for the first time for your account, the first 7 days you still have the 15 days penalty.
But I really recommend to use the mobile authenticator it provides way more control and security for your steam account!