I watch a lot of Day9 StarCraft 2 videos and have learned a lot from his excellent match analysis.
Is there any site like this – a site or video series that offers pro-level match analyses – for the League of Legends community?
Day9 doesn't analyze League of Legends, but here are some key components of why Day9 SCII videos are so useful.
I found a YouTube channel called "SovietWaffles" who seems to do really nice analyses, so you should check that out. However, he talks sort of pedantically, so I usually turn to streamers. Look below....
I find that certain League of Legends streamers accomplish the components listed above. Note that I'm not just listing the highest ELO players - I'm listing those who I believe can analyze matches well and teach things about the game. I am a dedicated League of Legends player, but I don't know everything/everyone, so if anyone else on Arqade knows some good streamers/websites, feel free to edit my post! :)
Depending on your skill level, some streamers might not be as helpful. As in, they'll teach you really cool stuff, but some might not be needed at, say, 1200 ELO. I would start with Guardsman Bob; I usually go to him and he has helped me in pretty much all aspects of the game. Some of these streamers also have YouTube channels.