Fly Me to the Moon: An Insider’s Guide to the New Science of Space Travel by Edward Belbruno
This is a great book that describes low fuel low thrust orbits to take us between points of interest and residence in our Solar System and it even describes low fuel routes to other stars. The low fuel routes take longer as they surf the chaotic gravitational fields. It’s written in an easy but still mathematical style that lets you enjoy the story of the acceptance of Belbruno’s ideas leading to his trajectory design that saved the Japanese Hiten Lunar mission in 1991. Belbruno even describes low thrust ways to capture and move asteroids.
Imagine many adequately provisioned craft in Belbruno orbits, awaiting new destinations like a fleet of roving jitney’s making low cost travel to anywhere in the solar system available to all. So, while we plan for a permanent residence at ELM5, we can plan to hitch hike around the Solar System on Belbruno jitney’s like a student on vacation with a Europass.