You are a new member and dont have so many content ideas than change your field and start buying posts from other members  . If you are not a good content creator or feel difficult to write and publish content than you can buy posts and earn from them . I'll share some buying tips with you 

First try to buy new posts , 2nd buy quality posts , 3rd buy posts from active members , And last and most important buy posts from members who post less and engage more 

So you can also earn in this way , writing and publishing content is not the only way of earning in bbs