I got a requirement to create some Add-Ins for Outlook Web App (OWA) Exchange 2013. I've tried googling but couldn't find much. Can someone help me on this and share some good information of links so that I can get some idea about this or at least how to start.
I've idea about Visual Studio and C#, is there any way to create these add-ins using VS tool?
Please share some links or steps, how can I create my own add-ins and how can I plug them in OWA Exchange 2013?
Yes, you can build add-ins using Visual Studio or the Yeoman generator. Note though that you can't use C#; Office web add-ins are effectively just web pages and can be built with standard web dev tools (JavaScript, HTML5 and CSS) and various frameworks (Angular, React, etc.) but not managed .NET languages.
The best way to get started is with the "get started page":
https://dev.outlook.com/MailAppsGettingStarted/GetStarted
Also see:
Add-in dev reference: https://dev.office.com/docs/add-ins/outlook/outlook-add-ins
Mailbox API reference: https://dev.outlook.com/reference/add-ins/
Code samples: https://dev.outlook.com/Samples/Addins