@rohilashubham Your first problem can be solved by approaching to help desk
You can then create a new case regarding your issue by filling appropriate information.
Then OpenMRS Team will mail you the status of your case.
For your OpenMRS Installation
1) You should have Java installed or download it.
2) You may then go to Download
download the Ref. App. 2.5
3) Extract the downloaded folder
4) run the .jar
file and start the process
5) You will be directed to a localhost webpage and login through
You may also see this gitbook
to get more information.
Video on " How to install OpenMRS"