Maffetone is working for me too. I think if you’re a new runner then you can get a lot of benefit from time on your feet. If you spend longer actually running, your body develops running economy. I used to do tons of “threshold” running. I now slow my runs down, but do more mileage. This is easier on your body. Don’t forget to only increase you weekly mileage by modest amounts. I think one of the well known theories suggests that up to about 120miles per week, there exists a good relationship between your performance and your mileage. Forgotten who it was, maybe “daniels” or some such. If you want the running bible, get “lore of running” from the library. Carrying it home will give you a workout too!