Game:

Official latest manual etc  -  https://recf.org/vex-robotics-competition/
Robotevents  -  https://www.robotevents.com/robot-competitions/vex-robotics-competition
Eng. notebook ex. (2023) - https://carminebot.com/97140A/97140A_VRC_Digital_Engineering_Notebook_2023_2024.pdf

General:

Official VEX forum  - https://www.vexforum.com/
Unofficial VEX forum  - https://www.theg2m.com/
Unofficial Wiki  - https://wiki.purduesigbots.com/
Discord (old 2022 list)  - Google Docs link

Drives - https://www.vexforum.com/t/catalogue-of-drive-gearings/109498
Gears - https://www.carminebot.com/vex/v5/vex_gears.txt
Hook Mech - https://www.youtube.com/watch?v=ybP6bGynbs4
Mogo Mech search - https://www.youtube.com/results?search_query=vex+high+stakes+mogo+mech

Pits & Parts:

Pits & Parts  - https://www.youtube.com/playlist?list=PLkZ6_Ld1x9Y-hQyNqJWqT5hjdfQ2WlCJ2

Robolytics:

Match analysis  - https://www.youtube.com/@lukedoesrobotics/videos

Lady Brown Mech:

https://www.youtube.com/watch?v=4kXPzhevh90
https://www.youtube.com/watch?v=EeLUeFFbA_s

Coding:

Free Harvard CS50 courses  - https://www.youtube.com/@freecodecamp/search?query=cs50
Official VEX APIs  - https://api.vex.com/v5

PROS (Unofficial C++ API & IDE from Purdue Uni)  - https://pros.cs.purdue.edu/
Ez-Template  - https://ez-robotics.github.io/EZ-Template/
LVGL Tutorial  - https://team81k.github.io/ProsLVGLTutorial/

C++ Intro Course (free) - https://www.youtube.com/watch?v=-TkoO8Z07hI
C++ online IDE (with compiler + input) - https://www.onlinegdb.com/

PID:

Intro for total Dummies  - https://www.youtube.com/watch?v=KMSJviT2jI8
Some other intro  - https://www.youtube.com/watch?v=UR0hOmjaHp0
Intro white paper  - https://georgegillard.com/resources/documents

Odometry:

Team 5225A PiLons docs  - https://wiki.purduesigbots.com/software/odometry
(PROS + LemLib + JerryIO)