The council website says that I can find on-line commissioner training on the district website. I can't find it. Please send me a link.

the link should be provided.

Commissioner Fast Start training is available online via the national BSA training site. We have added a reference and link to it on the training page of this web site (near the bottom). See also www.scouting.org/scoutsource/Commissioners.aspx
You must sign in to the national site to access any of the online training.