how i check the system properties,
There are various ways. Depending on what distro and desktop you are running you may find some gui in the menus. Things can also be checked via the command line but, you'll need to be more specific about what you want to check.
how i get the essential software like wireless dri
Software is usually installed using your package manager. Which package manager you are using depends on which distro you are using.
You can find out what distro are you running with the following command.
If you have specific questions and searching on the web does not answer them, please feel free to ask here at LQ.