How to start a custom league?

[efilomia]

Hi... I'm a new beginner and want to start a league with my 2 sons. I need some help. Can someone tell me where I can find instructions for starting a custom league? I went thru the process by creating a custom league and sent invites to both users but the invites didn't come thru. Would love to be able to chat with someone as I have other questions...

Thank you. Ed.