Also are there any other factions that teach the use of the force other than the jedi and the sith?

Im not too savy when it comes to SW lore but i have a question that has been bothering me. In order to learn to use the force one is either taught the light side from jedi or the dark side from the sith. That being said are there any force weilding characters who learned to use the force on there own? With no guidance (or minimal guidance) from either of the two factions?

Alright guys so Im trying to decide what is the right class for me...I can give you a description of my play style About the only way i can explain is in WoW terms so if youve played youll be able to help me... The class I've had the easiest time playing with is druid or paladin...do to the ability to switch between tank/dps and also the ability to do quick or massive heals on self and others...i love AoE spells and wiping out huge waves of enemies at a time...also Im somewhat big into PvP...if this info helps any input would be greatly appreciated...also dont mind being republic or sith..just whichever is best for what i want...and doees race have any effect on gameplay?