Hello,
1) Read the documentation https://xstore.helpscoutdocs.com/category/15-menu-set-up Watch the video tutorial on how to adjust header https://www.youtube.com/playlist?list=PLMqMSqDgPNmDu3kYqh-SAsfUqutW3ohlG
2) You can create product categories from Products > Categories > add new.
Regards
