Hi Knox, welcome to LeagueGaming. You will have to sign up for the CHL before you can play here in the NHL. Unfortunately the deadline to sign up for LGCHL and be placed into bidding was last week. If you sign up right now you will be auto assigned to a CHL team. Prove yourself at the CHL level, grind the game, and you will no doubt be given a shot at the NHL level. Good luck ! Here is a link to the CHL, where if you have any more questions going forward Im sure they would be able to help you out https://www.leaguegaming.com/forums/index.php?forums/leaguegaming-canadian-hockey-league-lgchl.371/
This guide is also a useful starting point (some of the links are broken and teams use Discord now instead of GroupMe, but most of the info still holds true): https://cheltips.com/lghl-beginners-guide