This unique "Practical Karate" series was in print a long time -- via various editions -- due to this series filling a need for GOOD Practical Karate for self-defense, protection and survival in various real-world situations. The [ten] Essential Points repeated thru-out this first book are the final finish to a well-organized and presented plan [from large to small scale] with clear writing and photos to present sharp Practical Karate methods.
Like other commentary, I value seeing the three Karate legends in graphic action -- Nakayama, Draeger and Nicol. One of Nakayama's and Draeger's main concerns was to really present methods that made good practical sense -- learnable and effective and matching the attack-situation using classical Shotokan Karate methods of self-defense. But, this "Fundamentals of Self-Defense" book, and the whole series, intrigues me even more as time goes on.
I went thru a long period questioning such classical Karate methods -- so was not understanding why several of my mentors liked Shotokan so much. In fact, most of my mentors had Shotokan in common, despite having other Arts as main ones. Also, I just could not understand why a "Deep" Art, such as Kosho Ryu Kempo, used classical Karate Kata, as well as advanced "Octogon" angling-checks and "Origami" folding-throws -- this Art being a main source of my first [Kenpo Jiujitsu] mentor.
Later, I happened upon an account about the making of the six-book "Practical Karate" series -- by co-author Donn Draeger. He stated that Nakayama could really do the Shotokan Karate movements as shown -- with terrifyingly accurate speed and power -- that left no question in anyone nearby that the techniques worked. Some of the stunt-folks apparently tried to get rough with Nakayama [several times] -- to curiously test him. Nakayama Sensei easily avoided their attacks and left them, in check, helpless -- yet, was holding-back in moderation.
Shotokan Karate is based on three primary approaches -- Kata [classical move sets], Kihon [moves practiced from sets] and Kumite [drill-to-free sparring] -- and Bunkai [self-defense applications of Kata, Kihon and Kumite -- with primary-to-extended versions]. Kodokan Judo has a very similar practice-strategy. So, both of those classical martial arts were already semi-modern -- with drill-to-free-sparring, as well as classical movement practice. Modern Western [and mixed] kickboxing and grappling styles typically have a similar strategy -- individual move practice, "sweet-combo" move-sets practice and drill-to-free sparring.
Now, I see that some quiet hints given to me by these mentors are correct -- one should understand that the half-step positions are important [fluid "soft" contact], as well as the full-step positions [solid "hard" contact], of the on-going movements -- and to understand that the classical methods are concerned about keeping on-going balance in unknown terrain, to move so as to be on-guard all-around in nearby-space against possible armed-attackers, while out-moving them and knocking them down as quickly as possible -- as exemplified via the "Practical Karate" series +++