We will be able to become registered users of Pottermore later, so we will need usernames and passwords because it wouldn't work any other way. یا did I get your سوال wrong?
Yes. آپ dont choose them though, there are a فہرست of I think 4 (lol I don't even remember for all I know it was 2) usernames selected at random in which آپ can choose from. Most of them sound really cool so don't worry you'll probably like it یا grow to like it as آپ go along. I go سے طرف کی the name MidnightElm, trust me you'll like the names I had trouble deciding which one I liked مزید lol. :)
