Starting the manga from the anime is tricky, because there's a lot of stuff in Season 1 that's not apart of the manga at all. I'm not sure you know about who and what exists and what doesn't, so I'll try my best to summarize (skip if you know this stuff already):
-Pluto, Ash, Angela, and any arcs including them don't exist (like Houndsworth and the Church)
-The only arcs in Season 1 that matter are episodes 1-6 and episodes 14-15, although 15 is heavily edited to include the angels.
-Disregard the Season 1 finale. Disregard any and all of Season 2.
-Everything else (S3, BOM, and BOA) is perfectly fine.
If you know all this stuff, then the chapter to start from would be 66, which is the epilogue to Book of Atlantic. It's no substitute for reading the manga from the beginning, which I really recommend when you're done, but yeah, that's that. Hope this was helpful :)
Anyone know what chapter should I start from after the anime? So after book of atlantic. Thank you