Icons - What do they mean? How ot use them.

I read about the “PowerUp” icon being changed to a helmet, but there are so many of them but I have no idea what they mean or how to use them. Is there anything out there for this?

thank you,
Rodney

https://support.zwift.com/hc/en-us/articles/203235279-What-s-new-on-Zwift-Island-01-15-v1-0-3378-

IIRC doesn’t the launch screen have a list and explanation ?

There is an explanation on www.titaniumgeek.com - in the Zwift unofficial user manual