What're some good sources for updating my Java knowledge?

I have a job opportunity which requires me to update my Java skills, which I haven't used since school in the mid 00's. What are some good websites, books or video series which can get me back on my feet without making me relearn what loops are or core concepts like OO.

I last used Java with EE 5, and now I need to learn both the changes in EE, SE and the language itself (lambdas...?) in about two months. (I obviously can't JUST do this for two months, but I need to be ready in two months while also doing other work.)