Hi
As mentioned by Ratna, you should start learning in structured way.
Please go through the resources mentioned:-
Link:- https://helpx.adobe.com/experience-manager/using/onboardAEM.html [on-boarding]
List of how to:- https://helpx.adobe.com/experience-manager/topics/how-to.html
Create a web site [Basic] :- http://www.aemcq5tutorials.com/tutorials/aem-create-a-website-in-cq5/
Coming back to your problem, please have look at the browser console for errors and also look for AEM error.logs. This will help in debugging the issue.
Please share the steps done by you and what exactly is happening with screenshots to better understand the problem.
Thanks and Regards
Kautuk Sahni
Kautuk Sahni