I only read a few manga before, despite having watched anime on and off since I was a kid, and having read American comics for several years, but I've been reading more recently.
5 out of 10 volumes into barefoot gen
2 out of 7 into nausicaa of the valley of the wind
16 volumes into berserk
1 volume into one Piece
There are several more I have my eye on, some of which have anime adaptations I was also interested in. I'm not sure if I want to start with the manga or anime, so I'd like to hear what any of you have to say about these:
monster
flowers of evil
one punch man
Meanwhile my anime viewing is a mess. It's going to take me forever just to finish all the shows I've already started.
15 episodes into when they cry
15 into fist of the north star
62 into rurouni kenshin
7 into space battleship yamato
56 into urusei yatsura
33 into dragon ball
1 into macross
3 into mobile suit zeta gundam
Series I completed recently are goblin slayer, attack on titan seasons 2 and 3, and made in abyss.
I'm also very slowly making my way through the films and series of some of the great directors of anime, so far including rintaro, kawajiri, otomo, miyazaki, takahata, oshii, yuasa, and hosoda.