As a new brewer, I've done about two brews, but never really paid attention to gravity readings. I've just been trying to get the bare-bones of the process down to this point. Now, I'm ready to get more technical, and get better brewing results. My question is, at what point during the brewing process do I take an original gravity reading and final gravity reading? Are there other points during the process I should be taking readings also? Any advice is much appreciated! Thank you!