Raven Guard lore

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So I’m brand new into WarHammer 40k (Space marines 2 put me on to this) and I absolutely love everything I’ve been reading about the 40k universe and everything that comes with it, basically I wanna ask my fellow Reddit users that have more knowledge than me if there’s any good books or pieces I need to read to fully know the lore and everything behind the Raven Guard I’ve looked into other chapters but none of them peak my interest more than the XIX Legion, anything about the successor chapters or anything about the Raven Guard themselves is greatly appreciated

Their may be a better sub for me to ask this question but I wanted to try here first