Perhaps you searched websites and purchased a few specialty running magazines to help you get off to a strong start. That's generally a solid approach when it comes to learning about something new, but there are some pervasive myths that could confuse you as a beginning runner. Here are just a few of them:
This is the most important change you can make to your training. Most beginning runners train at one speed, running at moderate (or even max) effort every session. While that's enough to drive meaningful aerobic gains, it's not the most effective way to get fast. In fact, most coaches will refer to moderate effort runs as "junk miles."