Starring a business is never easy at first you will need to have a good business plan then think of capital as second factor then plan how to strategize the business thou in case of fund you can use loan to operate the business
Urban farming seems to be so profitable but the cost to start it is what that keep people back because you will need to buy land and pay workers to work for you all this expenses required money
Facebook is one of the great place to make money you can start affiliate marketing and promote your product on facebook if you have a good landing page you can use your website direct to sell here
There are alot of opportunity available for freelancing and I believe that some of them is writing and editing this are the most rewarding opportunity which I have seen working online you can also learn how to design e-book cover it's one of the best way to earn
If you are a graphic designer you can make money on fiver there are alot of websites which you can sell such skills you can use upwork for that purpose or create your website and offer the service