These are the community resources I feel are the most valuable to me, personally:

Discord:

• TryHackMe: https://discord.gg/tryhackme
• Hack The Box: https://discord.gg/hRXnCFA
• Offensive Security: https://discord.gg/offsec

• John Hammond: http://johnhammond.org:8080/discord

• Simply Cyber (Gerald Auger): https://discord.gg/VsNWyZnJBT

• Cyber Insecurity (Neal Bridges): https://discord.gg/GQWU5G9
• TCM Security: https://discord.gg/tcm
• David Bombal: https://discord.gg/usKSyzb
• VulnHub: https://discord.gg/uHn4xdb
• hak5: https://discord.gg/QfmZFTyTY2

Linkedin:

• John Hammond: https://www.linkedin.com/in/johnhammond010/
• Gerald Auger (Simply Cyber): https://www.linkedin.com/in/geraldauger/
• Neal Bridges (Cyber Insecurity): https://www.linkedin.com/in/nealbridges/
• Heath Adams (TCM Security): https://www.linkedin.com/in/heathadams/
• David Bombal: https://www.linkedin.com/in/davidbombal

If I forgot somebody or a discord link, please, let me know!