how to install intel HD 4000 ubuntu 14.04?

i am new to Ubuntu and i want to install the driver of intel hd 4000,any help? i tried a lot of thing but i got missing packages and make problems due to auto make versions mismatch, the graphics driver appears for me is Intel® Ivybridge Mobile and the brightness control doesn't work

In order to install the drivers for your Intel HD 4000. Open Dash go to Software Updater, press the settings... button and go to the Additional Drivers tab, there you can find a list of drivers for your computer simply select the recommended one (if one is recommended) or the lates one.

It should be usable by default because 14.04 contains all the packages in the Intel Linux page but I don't believe 14.04 has the most updated versions. The link will tell you all the packages the Intel graphics drivers depend on.