I cannot find Online Training Certification portal

https://www.sophos.com/en-us/about-us/training.aspx

That is the main page, but really I would reach out to your sales rep, they are the best resource since they will know what exactly you have purchased.

I should add if you go to the link above, log in with your Sophos ID, click training, then select Admin it will take you too the portal for training courses, there are only a couple free the rest must be purchased.

Thanks

No Problem :) 

No Problem :)