I studied tenor sax from Grades 4 through 12 and my music teacher was a retired jazz musician. Coltrane is what is known as a "progressive" jazz players. Progressives use a lot of atonality, which can sound like they're playing the wrong notes, and they also don't strictly observe things like rhythm and meter. Coltrane got more progressive as the years went on. I used to imitate him by. just hitting sax keys at random, which my bandmates thought was pretty funny. I much prefer "traditional" jazz players who are more melodic like Stan Getz on tenor, Paul Desmond on alto and Gerry Mulligan on baritone. But if you're still interested in exploring Coltrane, he did an album with Duke Ellington - quartet of piano, sax, bass and drums -- which is about as accessible as Coltrane gets.