When Should I Take Protein?

I'm an ectomorph by nature and was skinny for the longest time, but I finally filled out with definition. That happened after I took protein. Now I'm wondering when I should take it to maximize gains. Right now I work out at my school gym in the morning and take protein way in the afternoon. I don't want to make protein shake in the morning and bring it to school Because warm shake is... eww.
When Should I Take Protein?
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