Without a doubt one of the easiest ways to start making money online is to join one or more affiliate programs. You need only to ‘brainstorm’ a couple different ways to start a business and include some of the more critical details in getting started, to realize which are easiest.
There are affiliate programs where you can promote tangible products such as in an ‘independent distributor’ situation where you will drop-ship to your customers; you can promote digital products such as would be delivered online by download – software, different technical services, etc.; and you can promote the affiliate program itself to earn commissions for referrals.
You might want to consider a combination of these as some are easier to sell (in addition to easier to implement). This may include a combination of one-time-sales and residual income which recurs monthly. It may be easier to make a one-time-sale as there isn’t as much commitment involved as in residual income.