You could get Chris Carmichael's "Time Crunched Cyclist." He describes a routine of concentrated efforts with rest and downtime. Then come back here in 6 weeks and tell us if it worked for you. It worked for me, especially since I have very little time to ride each day.
Or, as my other speed routine - my speed / distance improved by several mph by drafting FlyingBlind9. :-) Just sayin...
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FB4K - Every October we wrench on donated bikes. Every December, a few thousand kids get bikes for Christmas. For many, it is their first bike, ever. Every bike, new and used, was donated, built, cleaned and repaired. Check us out on FaceBook: FB4K.
Disclaimer: 99% of what I know about cycling I learned on BF. That would make, ummm, 1% experience. And a lot of posts.