Hi and welcome!
When you need to, you can post questions in specific sections/threads in the forums.
A good place to start though is the Lite Softwares program in the main menu.
There is a bunch of programs there that are the same as there Windows counterparts.
And, if you HAVE to run one old Windows program for some reason, there is Wine, a program that can run (most but not all) Windows apps.
Good luck!