good afternoon, guys! can someone suggest to me an up to date solidity course, please? is there any course already using foundry? thankss!

https://docs.soliditylang.org/en/latest/
types:
https://docs.soliditylang.org/en/latest/types.html

special vars: https://docs.soliditylang.org/en/latest/units-and-global-variables.html#special-variables-and-functions