Step 1 - go to the http://www.eclipse.org/downloads/
to download the latest version of eclipse neon
Step 2 -for linux based OS it will download eclipse-inst-linux64.tar.gz
Step 3 -extract the downloaded compressed file and copy the extracted file folder anywhere (you can keep on desktop too)
Step 4 -open the folder and you can see the installer file eclipse-inst, you can right click on that and click on Run
Step 6 -And follow the steps and while installing accept the license or succesfull installation.
Step 7 -Then you can choose or create your workspace and start working on eclipse neon.