1. I don't know for sure if this is what you're talking about but, are you using Chrome as a browser? If so, the thing at the lower right hand is so you can make the text box bigger or smaller. It's not a Mibba thing but a Chrome thing. ^^ If that's not what you're talking about then.... I have no clue what you're talking about. I'm sorry. ^^'
2. My Mibba > Stories > Stories (the one that comes up when you hover over the main Stories button) > Chapters
3. Go to your profile and click on your Stories tab. Click on the story you want to check the readers/subscribers of and on the top of that page, you should see a few tabs, click info and it'll give you all of that information. For poems... I don't know, I don't use that section. Sorry, but I'd assume it's a similar way to find out.