how can my younger brother who is a junior in high school start preparing for the real world?

plz don’t say SAT prep

building web3 security infra @ getshield.xyz 🛡️ • commander-in-chief @ ancientwarriors.xyz ⚔️ • nf.td/eman • emanft_.twitter

learn personal finance. start an internet business (content, ecommerce, drop shipping, etc.). Learn to code.

ok yes these all sound great, but where/how to begin?