We need a tutorial for what certain types of CC do

For far too long I've seen teammates complain about and stuns just because they couldn't move or silence being the reason they get cocky and die because they simply don't know what a silence does. Even the name of the CC above their head doesn't help since the majority of the time it either doesn't help new players know what to do or they're dead.

Past MOBA experience or research may solve this, but no beginner to LoL or MOBAs in general sits down and goes through all 130+ champions to see their abilities and the CC that they may or may not provide. At most the tutorial will "teach" them 3 right off the bat, , , and , and then they'll go through the list of champions and only click the ones they deem as cool or cute such as or .

One option instead of a tutorial is a tab next to the summoner spells that shows a small video with each form of CC in its own clip with a different champion per CC ( for snare, for taunt, etc) and a small description of each type.

tl;dr new players shouldn't be assumed to have to immediately know what various CC types do when there's tutorials for that and I suck at structuring posts x.x

edit: The fact that the majority of the discussion was about R helps prove my point. It's not even clear to experienced players. Imagine how beginners feel.