(I suggest you start with https://raku.guide (like the Rust Book) and also take a look at https://docs.raku.org/language/5to6-nutshell)

the raku package manager - zef comes bundled with the rakudo compiler - I use https://rakubrew.org

https://raku.land is a directory of raku packages

I would say that zef is very good (it avoids the frustrations of Python package managers like pip and conda) like perl before it, raku was designed with packages and installers in mind with a concern for a healthy ecosystem

for example, all versions (via the META6.json payload descriptor) carry versioning and the module version descriptor is a built in language type https://docs.raku.org/type/Version that does stuff like this:

  say v1.0.1 ~~ v1.*.1;   # OUTPUT: «True␤»

and this

  zef install Dan::Pandas:ver<4.2.3>:auth<github:jane>:api<1>

and this

  use Dan::Pandas:ver<4.3.2+>:auth<github:jane>:api<1>;

(of course, authors must authenticate to upload modules)