First Step is to figure out your likes and dislikes with a story and roles. It can be based on anything.Some people on here love in depth and story driven roles that are not all about sex. Some are on here for just a quickie of sex role-play like a porno does. You can even include pictures in your posts to envision complicated parts like how a dress/lingerie looks or a room.
Read the first post in the thread. www.freechatnow.com/forum/threads/lets-drink.43629/
Then another person in the roll play will continue from where the last one left off continuing to tell the story. Then another person or the first person in the rp will continue from where the last one left off continuing to tell the story. Everyone in the rp taking a turn to add on to the story.
That's the basics of soft rp online. In person is more fun when You can wear costumes or outfits to act out the scenarios using props or toys to make it more realistic and less like writing a book. It's like the home karaoke of sexual scenario acting or homemade porn. Kind of like a choose Your own adventure.