List to all the tools:

osu! phd by DigitalHypno:    • osu! phd: a comprehensive introductio...  
osu! collector: https://osucollector.com/
lazer!: https://github.com/ppy/osu/releases
spazza hyperfocus video:    • Improve at osu! FASTER — Stop Hyperfo...  
DigitalHypno's started map pack:   / s4yu55  

let's learn together!
my coaching profile: https://metafy.gg/@shikkesora/sessions