Need help

im new to wattpad

Hey peeps like the title says i am new to wattpad and i wanna ask a few questions and hope you guys answer them.

I want to wright a book but i dont know exactly what to wright about so i need your guys help on that.

How many books can i write?

Is there a preferred genre? If so what is it? I hope it isnt romance....

Is it ok to give shout outs at the end of your book or chapter?

Thats all the questions i can think of right now if i come up with any more ill be sure to ask. Thank you for your time. :)