Affiliate marketing is a good start for you because you don't need to have your own product to sell online, you just promote products that already exist in the market and when you made a sale you get a commission.
But, yes there's a big but because affiliate marketing is not easy. For instance you found a product to promote but you don't know how to drive traffic to that offer to start earning commission. Or you successfully drive traffic to it but very few. You won't get dime if that's gonna happen.
If you want to succeed in making an income from your home through the power of internet you need to have a guide a coach an experts that will lead you to make your goal of earning money online a reality.
I read a lot of books and they always said the same thing and I truly believed in it. The way to success is to seek the advice of the person who already reach your goal. In online marketing you need to find that tour guide that will help you achieve your dream income online.