In this class, I will talk about production support or application support. People who are trying hard to get a job in such domain, they can easily get to know many things and crack the interviews.
In this class, I will talk on Linux, Oracle db, Shell scripting, cURL command use, few DevOps tools.
Ex:-
1) usecases of Linux commands in product support job
2) handling of shell scripts while working on automatic jobs
3) Oracle database script or command execution specific to application or data processing
4) Monitoring tools that are usually seen in the support projects
5) Bug or issue tracking tool which is used widely by the companies
6) Usecase of Agile methodology being used in SDLC (software development life cycle)
7) Documenting major bugs or issues, present it to client weekly or quarterly etc... 
Also, I will give some more real time scenarios which we face after joining a company as production support engineer.