The "astral projection" stuff starts to veer off in to kooky-new-agey for me, but, now that I have a good laymans understanding of lucid dreaming I might be able to read a title like that with better understanding.  For anyone who wants to develop the ability to lucid dream I'd strongly suggest starting off with the down-to-earth how-to books, especially Stephen LaBerge's "Exploring the World of Lucid Dreams".  A lot of the other books out there are pure fluff and not at all helpful for someone who starts out sceptical like me.

"I've had some experience of attaining lucid dreaming states, occasionally, over the years . . ."  Most people have had lucid dreams.  They'll happen naturally and by accident sometimes.  But it's cool that we can learn to do it on purpose and get better at it with practice.