(superseeded) Linuxcnc on Linux Mint 19.3 quick and easy installation

Did you get the GRUB menu?
You have to chose the other kernel there.

In a terminal:

sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer

Start grub-customizer from the menu, select the 4.14.28-rt23-kona-rt and use the UP arrow to move it to the top of the list, save, exit.
Reboot.

no i did not get the grub menu

As easier solution without having to install grub customiser

Edit as superuser or root /etc/default/grub

eg:
At the top of the file

Change this line from
GRUB_DEFAULT=0
to
GRUB_DEFAULT=saved

Add this line
GRUB_SAVEDEFAULT=true

Edit\add these lines
#GRUB_HIDDEN_TIMEOUT=0
#GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=10

Edit\add this line
GRUB_DISABLE_SUBMENU=y

Then we need to update grub
This will do the following:
Show the grub menu & will boot the default choice after 10 seconds
Show all the kernels without a submenu such as "Advanced options"
Save the last selected kernel and make that the default kernel

References:
www.gnu.org/software/grub/manual/grub/ht...e-configuration.html
askubuntu.com/questions/148662/how-to-ge...remember-last-choice

This is the example of what I have, do not copy & paste but use as a reference:

This is the website I have been trying to use gnipsel.com/linuxcnc/uspace/linuxmint19-rt.html and I now have the first issue I sent you figured out from what you sent but now I get to this spot git clone github.com/LinuxCNC/linuxcnc.git emc and it shows link invalid

You need to type in the commands exactly as presented

Quick question my computer I am using has an intel dose that change what files I should be installing?

In regards to what files ?

I would have to go back and check I just remember some of the links on the step by step I have been fallowing are listed as ...... amd64

amd64 will work for intel 64 bit