I will try to explain. I have two usb ports on the MacBook. I plug in a blue tooth mouse adapter in one, which leaves me with one usb port. I need at least another one, therefore I would like to plug a usb adapter/hub into the one usb port I have spare to give me an extra two or more usb ports on my mac.
I understand computers thanks. I have had them for many years. I just don't understand everything, who does? But I would thank you not to be nasty, I'm asking on what I thought was a friendly forum.
But you're saying you need to plug in a usb hub, so buy a usb hub. I just don't understand what the question is. And that's not being nasty, you said you don't know what USB-C is, I just find it hard to believe someone would spend so much on a computer without looking at a review. Any review will note the USB-C interface, and google search would tell you what USB-C is.
If you need a HDMI port, then buy an HDMI cable, if you need a USB port, then buy a USB cable. It just isn't rocket science.
So you said you needed USB ports, I first posted a link for you for those USB ports, then you said you needed 3 but didn't know which you needed. If you need 3 of something, then you should already know why 3 you need as you'll have them likely nearby. Are they USB-A? Then you need a USB-A port again...