Which is the easiest martial art to learn?
Japanese Jiu-jitsu was the easiest for me personally although It takes years to be truly proficient in any style but I always found certain self defence techniques I learned, I could use instantly,it really depends on how dedicated you are ,how good your teacher is and upon the syllabus as all syllabuses in Japanese jiu-jitsu have both complex and easy techniques depending on your current skill level.