For each character level (up to 60), there will be 5 levels worth of weapon skill. This means that each different weapon skill requires 300 levels on a level 60 warrior. The reason why this matters is because of how glancing blows work on enemies. The basic concept behind weapon skill is that a higher weapon skill will result in less damage lost. With a lower weapon skill, your attacks have a chance of dealing reduced damage.
Warriors are the undisputed kings of WoW Classic tanking, being capable of swapping between excellent defensive capabilities plus decent threat building, or excellent threat building plus decent defensive capabilities. They also have multiple ways to taunt back enemies, or otherwise catch up and crowd control them before casualties happen among their allies.
I joined twitch in 2013 with the gamer name of FuriousPaul and I streamed speedruns of the classic Castlevania games full time from 2013 - 2017. Lately my streams have died down quite a bit due to working on Classic WoW leveling guides every day. My channel is now twitch.tv/Joana. Unfortunately I will have to wait until Classic WoW comes out before I start streaming it.