http://wiki.teamliquid.net/starcraft2/How_to_Improve

If you listen to commentators discussing matches, they can explain why certain decisions are gutsy, what the history of each player is (so-and-so is amazing at Medivac drops, so you expect that going into a game with him; so-and-so prefers the late game, so you'll never see him build proxy pylons), and the long-term ramifications of certain events (it doesn't seem like a big deal to lose 5 workers, just like a pawn sacrifice doesn't seem huge, but at the pro level of play, you'd better get something of equal or greater worth out of that; it doesn't seem like a big deal to know when Zerg builds their first extractor, but scouting that timing can tell you a lot about build order).

> LoL does require some mechanical skill but once you get it down, it's 90% knowledge.

At a certain point, LoL is about having teammates who you've worked with enough to anticipate and account for. There's a world of difference between baiting the carry and hoping your jungler will respond to your ping, and baiting the carry because you know there's three seconds until your jungler's dash is off cooldown.

Personally, I get the shakes when I PvP in LoL so what decent mechanical skill I have kinda fractures. :( I miss watching LoL streams, actually; they stopped working for me.