The Simple Path to Wealth (JL Collins)

JL Collins started this as a series of letters to his daughter about money — and accidentally wrote the FIRE movement's bible. His thesis is brutally simple: invest in VTSAX (Vanguard Total Stock Market Index Fund), avoid debt, and let compounding do the work. No stock picking, no market timing, no financial advisors taking 1% of your money to underperform the index. The book proves that simplicity beats sophistication in investing, and it does it in language anyone can understand.