Design app user experience journey

I am in the process of developing an idea for a social networking application. I need someone to help me design the UX journey. I would like help to start with a flowchart of how the application works - full user journey from start to finish.
We can also begin to design the UI a little bit. Any ideas would be very welcome. I would like the deliverable (output) to be very visual.
It would be great if the freelancer can coach me and ask me questions and ideate with me.