Investing in Blog:-
Blog is a type of site that contain articles.So if one like writing articles he can defenitely invest and create his own blog at very low investment and this type of investment has no risk at all.you need just to buy a domain name and web hosting and install wordpress on it and get started.if you dont know designing and have some more money to invest,design it with some expert on elance or odesk and just write your articles.You can also buy articles for you blog written by best writers online. Now if you have done all that the question is that how to earn from the blog and regain your invested money?So the answer is very simple you will sell advertizing spaces on your blog or you can earn through google adsense which is a advertizing program and this will be your passive income which you will be getting for your lifetime.
Investing in Forex:-
you can invest in forex trading or in stock exchange where you will buy shares and then when the prices rise you can sell it with profit.This is very simple but it has very high risk and one with no knowlege/experience has more chances of loss but still many people are earning a good income from it.
Investing in PTC sites:-
PTC sites stands for paid to click sites such as neobux(the king of ptc).with ptc one can recover his investment in 3-4 months and then it is pure profit.As there are many payment proofs around internet and in neobux forum and there are many blogs around internet that clarify that ptc sites pays to its members but there are scams in ptc industry so one should remain safe and invest one in genuine ones such as neobux,probux,clicksense etc
Investing in Domains:-
There are many people selling domains at internet and earning a good income.On flippa there are many domains sold daily with high prices which means that these people earn a good profit buy buying domains at low prices and sell on high prices and it is a big industry where thousands of people are involved and earn a good income.
Investing in Hyips:-
Hyip stands for high yield investment programs.These programms give intersts on investments and is a good source of income as they give very high profits as compared to offline banks etc but there is a risk as they are Ponzi schemes and turns scam after some time but there are many hyip moniters that moniter each and every hyip by investing in these programs and give daily updates.As there are many blogs and many people earn a living from the hyips it could be a good source of income from internet by investing online.
These are some of the programs in which we can invest and earn a good income.The list could be very long but i think these are the best ways to invest online.
Read:Ways to earn online for beginners