Hello, I am an absolute newby to cnc (and green at machining), so thanks for any help.

I just bought my first machine, a Journeyman 330 with Delta 20 controls. I did not get any tooling with it. The manual says: Spindle taper #40 Erickson. There is a #40 quick change tool to lock the tool holder, but no marking/number/etc. on the end of the spindle by the lock collar.

What tool holders should I buy for this (or look for to figure it out)??

I have read/heard there is CAT / NTDB / Quickchange. Could someone explain what these are?

Thank you for your help. Mark.