Welcome Sumit!
If you're new I would recommend watching some videos that relate to what you want to do:
https://www.youtube.com/c/UmbracoLearningBase
And start browsing the documentation:
https://our.umbraco.com/documentation/Fundamentals/
For other Umbraco questions, make sure to head over to #882984410432012360 (assuming you're using v9 or v10, otherwise #882968040709427220 for Umbraco 8 and below).