Found in 2 comments on Hacker News
billfruit · 2021-03-29 · Original thread
I thought the common suggestion for a modern Latin textbook is Wheelock.

https://www.amazon.com/Wheelocks-Latin-7th/dp/0061997226#

aestetix · 2018-02-05 · Original thread
I'm on chapter 20 of Lingua Latina. I think it is very well done. I did study latin in school formally for four years, so it's more of a refresher, but it teaches some concepts I hadn't encountered before.

That said, it can be difficult at times, especially around Chapter 16. I would recommend picking up a copy of Wheelock's* as well, which is much more focused on grammar and structure. You might want to either go through Wheelock's and LL together, or tackle Wheelock's first and then LL second.

* https://www.amazon.de/Wheelocks-Latin-7th/dp/0061997226/

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