Type of browser and operating system

How can I check my browser data?

a) Internet Explorer: click here 

b) Mozilla Firefox: click here

c) Google Chrome: click here

 

How can I find out what operating system I have?

a) Windows computers: click here

b) Linux computers: click here

c) Apple computers: click here

 

How to update my browser?

a) Internet Explorer: click here

b) Mozilla Firefox: click here

c) Google Chrome: click here