Carlos, The Hyperglot Activist, has made another YouTube video to help learners of Spanish with something that often causes a headache - especially for English speakers: when to use the word ‘por’ and when to use ‘para’, as these are often translated as ‘for’ in English.
Learning them gradually in context so that you instinctively know which one ‘sounds right’ is the best way, but if you want a video summary of the most common uses, this is quite clearly explained: