Go to Bogleheads https://www.bogleheads.org/wiki/Getting_started. There is an active forum https://www.bogleheads.org/forum/index.php . Bogleheads is named after Jack Bogle, the late founder of the Vanguard family of funds and a champion of stock index funds. Bogleheads is not the place to learn about crypto or FX trading. They generally advise against non-traditional investments.