An invite link to the Lands to the discord can be found here.
Latest high-performing lists can be found on mtgtop8 here.
The following streamers either stream Lands (or Lands-adjacent decks) or else know the deck well and are great resources:
Lands is an old deck and you can find a lot of older write-ups and primers. We’ve collected a few here:
(1) from the Source, 2013.
(2) from Jarvis Yu, 2015
(3) from Eric Froehlich, 2016
(4) video primer from Jody Keith, 2018
(5) from Tim Schultz, 2019
There are a number of older videos (2019 & earlier) of the deck in action. As above, we’ve collected some here. If the link takes you to a player’s channel, just ctrl+F ‘Lands’ and you’re sure to come up with something.
(1) Jarvis Yu
(2) Jody Keith
(3) Legacy RG Combo Lands Coverage Playlist