Embed report within web application

Hi ,
I am trying to embed a power bi report with an application (based on .net & React) ,sothat when a user logs in he/she can see only his data in the report section within that application . I have followed the AppsOwnData Approach and using embedding environment i have downloaded the sample application.
1.So should i use the sample application which doesn't have some of the fields like script ..or should i use the sample file that MS provides in git hub repository?
2.Another query is In that particular solution what are the changes i have to do for the interaction to be happen ?as i have already created the application ..i have made the changes for web.config file like giving the report id,application id and so on but what are the other code level changes i have to do...could you please guide .. 
3. Except this embedding is there any other way to pass parameter from an application to the report  @GilbertQ @lbendlin @Ailsa-msft ibarrau