Like GSDLover says, punishment is definitely not what you need to do right now. 11 weeks is pretty young for much training at all so don't have too high of expectations right off the bat as far as her paying attention. I jumped into it ill prepared and had a lot of the same feelings you seem to be having but don't lose hope! My pup is 9 months and turning out great, just stick with it! Take her out every hour if you can and throw a party when she pees outside correctly...
When she pees inside scoop her up fast and rush her out, then praise her when she finishes out there.
She will get the hang of it, the key is to get a good run of like 10 successful bathroom breaks in a row where she gets praised and gets treats and it will click for her.
Keep her on a lead when she is with you and crated when you're gone so she only has access to things you directly provide for her (toys, food etc). She has to know that all things good in life come from you and only when you say.
I am coming out of what I thought was a nightmare of dog ownership and is just now turning out great, so feel free to ask anything you would like!