2. Another review here."I am relatively new to the energy business. One of the things I had to do as soon as I started was to take a course given by Baker-Hughes about all the stages of the oil and gas business. It wasn't a bad course, but I now think it would have been better for me just to read Oil 101 by Morgan Downey......Oil 101 is an excellent handbook, and should be on the desk of anyone in the oil (or gas) industry, regardless of where in the value chain you are." (full review here)