Advanced surf tutorial

I just finished an advanced surf tutorial that people might find helpful. It covers the speedcap, headsurfing, slanted bhops, speedrunning tips, prestrafing, and stuff like that.

If you think it would be helpful to people, maybe there could be a !advancedsurf command that shows the video in the servers. There could also be a announcement like for the regular tutorial that says, "Want a more advanced guide? Type !advancesurf" or something like that. That could help people who feel stuck around the tier 2 skill level, and answer a lot of common question people have.

Here's the video:
https://www.youtube.com/watch?v=0vh2a_ILQCk