About 6 years I went from a zero mile a week couch potato to a monthly century ride in 10-months. My quick list advice:
- Get a bike that you're comfortable on (financially as well)
- Commit to weekly and monthly goals that are obtainable. I started at ~50 miles a week (minimum of 3 rides). At 6-months in I was doing ~125 miles a week (minimum of 4 rides).
- Figure out a nutrition plan that works and is maintainable. I, for example, couldn't mentally give up soda. But I reduced my intake from 40+ ounces a day to 12 ounces a day.
- Find a riding buddy that is either on the same level or willing to ride at your level at least twice a month.
- Find a riding buddy that is of a higher level of fitness to ride with at least once a month to push you (I introduced this at month 6) but not crush your spirit.