Lightburn is in my opinion, one of the best software packages for use on laser engravers / cutters.
It can be downloaded here https://lightburnsoftware.com/.
Trial version is available.
If you have a license and a new version is a available, just download the trial version and install. It will pick up the installed license and you are ready to go - updated and all !.
Any questions -> you can contact me here
Before you try to burn anything -> check dimensions, check layer settings and check Device Settings. If you don't, be guaranteed to have a bad day.
I personally unintentionally burned a hole in my table. It certainly does not suit the table.
So be warned.
RTFM -> Lightburn is a beautifully crafted bit of software. It has an enormous amount of features so "Read The F****cking Manual" as the old adage says.
There is a very active user forum which can be found here https://forum.lightburnsoftware.com/
On youtube there are several channels but one of the best informative ones is Lightburn Software followed by