What do you mean play? Can you give a better term for that word "play" for bounties. If you mean on how to join bounty for beginners, you have to rank up first as there bounties that won't allow a newbie to join them. And later on there will be the update of activity so you just have to wait for it. And even if you'll join their social media campaigns there's a minimum rank requirement and you still don't fit with it.