It sounds like it is possible to make money online ...

When who talks about investment? Are you referring to the author of the "article" you're citing? Doesn't the article answer your questions about this subject? If not, why did you bother reading it and then asking additional questions about it?

Perhaps you should ask your own questions in your own words, instead. Do you have any?

JKG-

I want to thank you for not revealing the secret handshake and SEO optimization codes. As long as we play dumb about this, we can make a killing while folks like this poster can only dream.

Uncle Frank

Well the only investments you will need to make when your trying to make money online is into the right information...

 You need to be very picky when choosing who you are going to accept information from because of all the spams and well duh Everyone Want's To Make Money Online!

But not all of em are bad....A good cheap but really good site I recommend you start off with is Right Here ..

This is Chris Farrell's site and is a very reputable marketer. He has been featured in business weekly and consistently ranks as the top affiliate marketer of his time...

Its only a 1 dollar to get started and if you don't like it (Follow every word he says) He will give you're dollar back so there's no need to worry. He will teach you everything you need to know. Give it a shot risk free

Forex trading is big business. The global annual turnover is counted in trillions, yes that is right, trillions of dollars More and more people, day after day, are eager to learn how to trade online. This creates a business opportunity. Online trading in stocks, futures, options and of course forex is a booming business. The technology and permissions to be able to trade online for ordinary people has only been available for a few years. The growth in people trading has been dramatic.

if you are starting to make money online, I'd rather try first to do online jobs like writing, web design, graphic design etc. you can find thousands of freelance jobs online. try odesk.com

It is very possible to make money online. However, you should never ever have to pay anything to make it. All of these sites that say "oh you will make all of this money with us, you just pay this much!" What they don't tell you is that you can find most of the info they are going to give you by yourself. The hardest part is finding companies that do hire real people to work from home without any catch. While they are hard to find, they do exist. Companies hire people to work from home and write, do customer service, do tech support, translate, and more. For a list of legit companies hiring real people, try Don't Spend it To Make It. The info is free, and there is no catch to apply or join any of the sites.

Source:

http://dontspendittomakeit.yolasite.com/