Complex sentence: Participants are strongly encouraged to create a Wikipedia account prior to the event by clicking "create account" in the upper right hand corner of any Wikipedia page and then bring your username and password with you to the event.
Split into simpler sentences: Participants are strongly encouraged to create a Wikipedia account prior to the event by clicking "create account" in the upper right hand corner of any Wikipedia page. Don't forget to bring your username and password with you to the event.