This is simple, but you need to know what your planning on investing in. Also you must have a goal and plan in place. Simply invest in the bare basics, have the patience to make that work for you and squeeze a return and profit from it. Take that profit and repeat. Continue to trade up, putting in everything you earn from your initial investment each time.
I remember once, I've read an article about an Entrepreneur who started an Online business with $0 investment and a lot of Hard work. Come to think of it, it is really possible to do this. There are a lot of FREEbies in the internet that you could get your hands on to help you start your business. You just need to spend your time and a lot of patience to observer which niche will give you your decent amount of earnings, and then keep investing. That is all to it.... I guess.
Invested in IDNs. Minimal Investment, Large possibilities. People purchased for $6.99 --> already flipped for Thousands. The dream for "minimal investment" in IDNs is not so true anymore, since their value is growing by the month+number of users switching to vista/ie7 [which will be huge in a matter of months]+ depending on keywords. You should be a native speaker to find a lot of the premiums left in any given language. ____