Whilst philosophy literally means ‘love of wisdom’ it is not, generally, a subject with a body of truths or theories to be learnt, but an activity in which you engage when trying to answer some very abstract questions.
What is needed is needed is an enquiring mind which makes no assumptions and a willingness to question everything.
This is a slightly circumvented quote from a course description of the philosophy course at the King Edward VI College in Stourbridge England. If I lived in England I would enroll, immediately.