Very vague info, provide some background first-How old are you, you have a steady income, what are your financial commitments. After that we can guide you (informally of course) on how to chose appropriate investment. Otherwise most basic is in open an account with a broker, fund the account and place an order

i started trading at the NSE when i was back at the university. never cheat yourself that you should look for 'enough' money before venturing in this. whatever you have is enough.
my advice, place the right bets, and keep your ears on the ground.