Working from home can be a scary yet very rewarding thing. The first thing you need to do is decide what type of work you are interested in doing. Then you need to get your place of work organized for your comfort. No matter if you decide to fix cars out of your garage, sell on eBay or write paid reviews online if you do not do it with quality you most likely will not succeed. For me I have done very well with my blogs writing paid reviews. I have four blogs and use almost exclusively PayPerPost v4 and SocialSpark owned by IZEA for getting my online work. They like any company has had there times of struggle because of the economy. But they are still the most consistent when it comes to giving me work.
Other forms of online income can come from advertising for places like Google and Yahoo they both have a slow return and are based on traffic to your website and the amount of clicks you get on their links. This is also known as CPC or cost per click. Definitely something worth considering although this does not have a large payout. There is also Affiliate Marketing which works a lot like CPC but has a much large payout paid directly by the person or company advertising on your website. This is a great form of revenue for those with high traffic websites.
In short if you are considering the thought of starting a work at home or home based business. Consider it very well and do your research. Not all works for everybody and if you want to succeed do it with quality.