investments

Now that i am earning my own money...I am thinking..what's next? How do I double my income and triple my savings? Some poeple would suggest me to : buy gold coins, or buy mutual funds, insurances, foreign exchange or even shares! While others think of investment into lands and estate. Can anyone provide me the best way to double my income, triple my savings and multiply what I've got? What I earn is a basic of the normal income in the community. it is not extremely too much or too little. Just the average...maybe slightly below average...which makes me want to triple it or even multiply it even more! Shall I start with estate investment? Or bonds? or funds? or even golds?