I started a website. Made a PDF that solved a REAL problem that I once had in my own life and which I had searched desperately to find a solution for. By passing that solution on to others, I was able to profit; over $3000 in a month by selling a digital pdf file. I offered a 90 Day 100% Money Back Guarantee and not a single customer requested a refund. No customer calls, only a few questions sent in by email, and all of the sales happened automatically online. I literally got to enjoy, for the first time in my life, the strange and pleasant sensation of waking up to money in my Paypal account that was not there the night before. It was really cool to be able to see a name next to the number and know that I actually helped someone solve a problem and they sent me a monetary thank you. You can click below to see exactly what I made, how simple the webpage is that sold it, and how I turned readily available low cost resources into something I could sell for profit by adding value in the form of a solution to a problem(in a pdf).