Catching Up as a Returning Player

I was just wondering what some returning players might do when catching up to the new season. I haven't played in a couple months and I'm still trying to get back into the groove of things and familiarize myself with all the new items, champions, and balancing changes and reworks. First game I played coming back I was playing jungle and was completely lost will all the camp changes and those weird exploding fruit things. Basically does anyone have tips/resources that would simplify catching up on all the new changes over several months?
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