Could you maybe describe what you have already tried?

To install Liferay, you basically just need to download the compressed file, unpack it and start it.
When you try to install the IDE, are there any errors?

Amitosh Kumar

I am new in liferay, I am not able to install liferay 7.1 in my ubuntu local machine.

sudo aptitude install openjdk-8-jdk
unzip liferay-tomcat-bundle.zip
./liferay-tomcat-bundle/tomcat-x.x.x/bin/startup.sh

(substitute "liferay-tomcat-bundle" with the actual file and directory name. Substitute aptitude with apt-get if you don't have aptitude available)

Anything else: Follow Christoph's advice: What did you try so far? What exactly failed? "It doesn't work" just isn't enough information, because "it works for me" (TM).