The Different Styles Of Salsa
Colombian Style Salsa (Cumbia) 
Colombian style salsa began in Columbia and is danced to a different   type of salsa music called "Cumbia" which is similar to the salsa  rhythm  but has a longer pause between the first three and the last  three  beats. It is rare to find a Cumbia instructional class as most  people  who dance this style were taught by family and friends. The  style is  still quite popular in South/Latin America and can be  distinguished by a  circular style of open/side breaks with a tap on the  pauses of 4 and 8.  Feet never move forward and backwards as in the  Mambo step. Instead,  the movement is a series of back to centre or side  to centre footsteps.  The style has very little turn patterns and is  generally not a fast or  "showy" style. Instead most Cumbia dancers will  hold their partner very  close with their entire bodies touching from  head to toe. If turns are  involved, they are generally very simple rock  step left turns.
Cuban Style Salsa 
Cuban salsa style is most similar to the original form of salsa  rooted  in Cuba . It is characterized by Afro Cuban style body movement  which  includes body isolation and hip movement. Cuban style salsa does  not  have many fast spins. Instead the movement is very circular as  opposed  to linear and partners tend to travel around each other. The  hip  movement is more noticeable in this style and stems from the  pumping of  the knees. The footwork is quite simple - the complexity  lies in the arm  work which requires the follower to have limber,  flexible arms. Cuban  style salsa is considered "male dominated" in the  sense that the leader  tends to be more showy and will create a greater  push/pull feel for the  follower than many other styles. Most Cuban  style dancers tap on the  pauses which are on the 4 th and 8 th beats if  the dancers dance on 1.  However, Cuban style salsa dancers do not  always stay on the 1 beat and  tend to stray depending on where the  music takes them.
Miami Style Salsa (Classico Cubano, Casino) 
Miami style salsa evolved from the Cuban style of salsa but is a more   difficult and technically advanced style of Cuban salsa. Advanced  Miami  salsa moves tend to be intricate and pretzel-like and require a  flexible  follower to execute the moves. Many of the Miami moves are the  same as  Casino Rueda moves and the style is still more circular than  linear.  Open breaks or the Guapea basic (leader and follower break back  and then  push off eachother) with a tap are the most common basic  steps in Miami  style salsa. Cross body lead variations are common but  are executed in a  more circular fashion.
Casino Rueda Style Salsa (Rueda de Casino, Salsa Rueda) 
Casino Rueda (meaning salsa wheel) is a group dance which originated  in  Havana , Cuba in the 1960s by a group called Guaracheros de Regla.  In  this dance, couples dance in a circle while one dancer, designated  as  "The Caller", provides hand signals or calls out the moves which  will be  executed by every couple in the circle simultaneously. Many of  the  Casino moves involve swapping or switching partners which makes the   dance tricky to execute and spectacular to watch. Rueda is very  popular  in Cuba and Miami and has gained popularity all over the world.  Cuban  Rueda tends to be more playful with easy to follow fun moves  while Miami  Rueda has many complicated turn patterns and requires  memorization and  skill to execute. Many callers will know anywhere from  150-300 moves so  memory, speed and accuracy is a key to ensuring the  circle is not  broken. The advantage of learning Casino Rueda is that  all moves learned  in the Rueda circle can be danced one on one with a  partner adding to a  dancer's repertoire of moves.
L.A. Style Salsa (Dancing "On 1") 
L.A. style salsa, usually danced "On 1", is a flashier version of New   York style salsa moves. Dancers use lots of dips, flips, drops and   tricks which make for a great show to watch. The back and forth Mambo   basic, again in a linear motion, is utilized with the leader breaking   forward on 1. Because the dominating beat is the 1 beat which is the   most accented beat in the series, the dancing looks and feels powerful   and fast. L.A. style salsa has incorporated many other types of dancing   including jazz, hip hop, and ballroom which is challenging for the   dancers and entertaining for the viewers. Similar to the New York style   salsa, many of the moves are created from cross body lead variations.   Shines are an important component of this type of salsa with   complicated, speedy footwork and jazzy moves.
New York Style Salsa (Dancing "On 2", Mambo Salsa, Eddie Torres Style) 
Salsa on 2, commonly referred to as "Mambo", is a style of salsa  first  introduced by Eddie Torres in New York in the 1960s. Technically   speaking, dancing "On 2" refers to the beat the dancers break forward   on. Followers will break forward with the left foot on the 2 and leaders   will break forward on the 6. New York style salsa is distinguished by   smooth, controlled, highly technical movements that are elegant,   graceful, flow well and are not rushed. The style is very linear and   many of the turn patterns evolve from cross body lead variations.   Multiple spins, complicated footwork, Afro Cuban body movement and   shines are a must. Dancing "On 2" is rhythmically more difficult as it   is easier to hear the 1 beat and break on this beat. Many dancers learn   to dance "On 1" first and then train "On 2" as they feel it is more   musically and rhythmically rich and complex.
Puerto Rican Style Salsa 
Puerto Rican style salsa can be danced "On 1" or "On 2". If you are   dancing Puerto Rican style "On 2" dancing, it is opposite from New York   style in the sense that the leader breaks forward on 2 instead of the   follower (can be called "On 6"). Some say that shines originated in   Puerto Rico as these dancers would break away from their partners and   execute extremely fast and complicated solo footwork. The lines are very   clean and there are a great deal of shoulder shimmies incorporated  into  the dancing. There is an emphasis on dancing to the "Clave"  especially  the 2/3 clave (pa-pa, pa-pa-pa). In fact Felipe Polanco, one  of the  pioneers of Puerto Rican salsa, has created a unique basic that   compliments the uneven 5 beat dance which incorporates a sliding  forward  and back motion that hits the accents of the clave.
Salsa Shines 
Shines refer to solo work when the leader breaks away from the  follower  and each dancer has the opportunity to freestyle on their own  to the  rhythm and accents of the salsa music. Shines involve more  complex  footwork as well as body movement and arm work. Shines are  common in the  New York , L.A. and Puerto Rican styles of dancing. They  are not as  common in the Cuban, Miami and Columbia styles of dancing.  The term  "shines" originally referred to having the opportunity to  "shine"  independently. Shines give dancers an opportunity to take a  break from  partner work and turn patterns and freestyle. There are many  common  shines such as Suzy Qs and flares but every dancer has their  own unique  and individual movements which allows dancers to be  constantly  challenged.
Salsa Styling 
Incorporating styling techniques into any style of salsa has become  very  common. For both men and women shines, leg work, arm work, body   movement, spins, body isolations, shoulder shimmies and rolls, and even   hand styling have become a huge trend in the salsa scene. There are   lessons dedicated to the art of salsa stylin'. Hip hop, jazz, flamenco,   belly dancing, ballroom, breakdancing/pop and lock, and Afro Cuban   styles have all be infused int the art of styling.