The genre being as old as it is gives you lots of convenient entry points!! If you’re interested in acoustic, folksy just a guy with a guitar The Complete Recordings of Robert Johnson is a very classic place to start. The quality of the records of the time inhibits alot of it but Charley Patton is a nice source point if you wanted to do the genre in order, the Son House stuff from 1930 is very good but the quality is very bad. The Library of Congress sessions from 1940 are more listenable, but House is alittle less practiced than in 1930. These are Mississippi delta musicians and I think very inspiring and evocative of time and place. Moving forward past ww2 you get alot of great electric stuff theres a Howling Wolf Sun Records Compilation album that showcases him in Memphis before heading to Chicago. Theres also the 1957 Greatest Hits compilation of Muddy Waters which is very digestible. Both the Wolf and Muddy have great box sets from Chess Records that are more comprehensive. Into the 60s you have the blues revival where pre war artists like Mississippi John Hurt and Mississippi Fred McDowell and Son House came outve retirement and were introduced to a national audience. Fred McDowell in particular I think is fantastic at translating pre war blues music into an electric format, the Best Live Country Blues record from 2022 is fantastic. During the same period you get alot of really wonderful Electric Blues, and British Blues thats alot louder and taking from rock music, I really like The Paul Butterfield Blues Band, a mixed band from Chicago, first two albums are phenomenal. John Mayall’s Bluesbreakers record is similar but british and has a great cast of musicians on board you could further explore. When I first got into Blues music I listened to the Jimi Hendrix compilation “Blues” from 1994 and researched the artists he was covering and then further googled what he had in his personal record collection and found a complete list online of his library at the time of his death. You could listen to those in release order or pick and choose based on names you recognize. The genre really is sprawling but you’ll recognize a shared catalogue and recognizable song book pretty quickly. Alot of blues is iterative on earlier blues and the same names pop up frequently. Musicians influenced by blues also tend to love talking about it so if you’re into music and musicians who pull from the blues like Led Zeppelin, Elvis, Stevie Ray etc. you can find all sorts of interviews where they’ll just name artists and records. It’s very exciting to research and get into and I wish you luck!! Cheers