Or, there is another theory for your primary salary – generate enough to have a little excess cash flow, but do it at a place that you can work stress free and have time to dabble in other projects.  A good friend of mine has this setup – he works 10-5 and makes $50,000 a year.  This allows him to easily cover all of his expenses, but the shorter hours and flexibility in his job allows him to pursue his secondary income generating ideas!
In India Freelancing is synonym with Journalism but trust me its a very big industry abroad. Freelancing is full time career for many professionals. In India its at nascent stage and Freelancing is not a highly paid job. Positive way to look at it is that if you start today then you will have 1st mover advantage. Freelancing jobs are available in various domains. One of dedictaed Indian site for freelancing job is worknhire.com
My favorite type of semi-passive income was rental property because it was a tangible asset that provided reliable income. As I grew older, my interest in rental property waned because I no longer had the patience and time to deal with maintenance issues and tenants. Online real estate became more attractive, along with tax-free municipal-bond income once rates started to rise.
Freelance writer: If you have a knack for writing, you can earn great money writing for others. Not sure how to start? Contact bloggers, who are always looking for great writing. As blogs grow, they can afford to pay freelancers good money for quality articles. Websites looking to build links also hire freelancers to write guest posts to be published on blogs and websites.
* I use Personal Capital to track all my finances in one place. It’s much easier to use their free software to follow 28 accounts on one platform than to log into various accounts to check my balances. They’ve also got great tools for x-raying your portfolio for excessive fees, recommending a more optimized asset allocation, and planning for retirement with their Retirement Planner.
Several economic historians have argued that real wage decline occurred in the early 19th century, or possibly beginning in the very late 18th century, largely as a result of British imperialism. Economic historian Prasannan Parthasarathi presented earnings data which showed real wages and living standards in 18th century Bengal and Mysore being higher than in Britain, which in turn had the highest living standards in Europe.[101][78] Mysore's average per-capita income was five times higher than subsistence level,[115] i.e. five times higher than $400 (1990 international dollars),[116] or $2,000 per capita. In comparison, the highest national per-capita incomes in 1820 were $1,838 for the Netherlands and $1,706 for Britain.[117] It has also been argued that India went through a period of deindustrialization in the latter half of the 18th century as an indirect outcome of the collapse of the Mughal Empire.[78]
There are a lot of article sites out there that share revenue, but my favorite (and it’s where I earn most of my article writing income) is InfoBarrel, which you’re very familiar with if you’ve been following my blog for awhile.  If you’re up for a very ambitious challenge, you can read about the one I wrote for earning $2,000+ per month with article writing.  The top InfoBarrel writers currently earn at least $2,000 per month.
Author Bio: Sam started Financial Samurai in 2009 to help people achieve financial freedom sooner, rather than later. He spent 13 years working in investment banking, earned his MBA from UC Berkeley, and retired at age 34 in San Francisco. Everything Sam writes is based on first-hand experience because money is too important to be left up to pontification.

Do you know Music ? Are you an expert in Maths ? Vedic Maths ? Yoga or may be cooking ? Do you live in a residential society which has 100’s of other families? Then tutions is a perfect thing you can start give you are good at what you claim to. You can always dedicate 2 hours (if you really have them) and do some basic advertising in your apartment or nearby places and take students to teach them at home. The best part of this kind of tutors is that you refresh your dying knowledge, earn some money at the comfort of your home and you kill time which goes into unproductive things most of the times. myprivatetutor.com is a good place to register and start with.
I have a total of three CDs left. There is no way in hell I’m selling them after holding them for 4+ years so far to take the penalty. The CDs are for 7 years. That would be completely counterproductive. As a result, I feel very stuck with ever getting my CD money back if I wanted to. If the CDs were for just 1 or 2 years, I agree, it doesn’t matter as much. But combine a 7 year term with 4%+ interest is too painful to give up.
No matter what venture you undertake in life, you need a team.  I’m a firm believer in team work, even if it is just to bounce ideas off of, or to have someone tell you that you are off track.  For many individuals, this person is their spouse, who also brings some income diversity to the table.  Just like I mentioned above, if your spouse has income, try to maximize it.
My reasons for diversifying income are simple: I want to be able to quit my day job eventually. But your reasons may be different, maybe your job isn’t that secure or your co-workers are starting to feel the pressure. It really doesn’t matter why you diversify your sources of income, what matters is that you do it. Making money won’t happen overnight with second sources of income so if you wait until it’s too late you’ll be screwed.
Passive income is the Holy Grail for online marketers. It's automatic. Effortless. But, not at first. In the beginning, it's grueling. I liken this to doing the most amount of work for the least initial return. However, over time, as your passive income begins to increase, your reliance on an active income plummets. That's when the real magic starts to happen.
The reverse can also be expected unless the rents rise too.  This rental increase might occur if we imagine interest rates are rising because the economic environment is improving.  At present, it is widely expected that rates will rise ever so slowly over many years.  Indeed the US has been looking for the courage to do this over recent months and they may start rising there soon.