new air Mac 16 GB memory running Sonoma 14.0

CNAPIER wrote:

This is my first Mac and I am trying figure out how to see the amount of memory I have and how much is being used. ... I want to see how much is left on the hard drive

This article may help you: See used and available storage space on your Mac - Apple Support

Or: Disk Utility User Guide for Mac - Apple Support

Use Activity Monitor

View memory usage in Activity Monitor on Mac - Apple Support

Memory is not hard drive space. HDD space is permanent storage; memory (RAM) is volatile and its contents disappears at shut down or restart.