Does anyone have any tips to remember whether to use por or para?
I always get these two mixed up.
You would use por for travelling by transport eg por tren or denoting a method eg por teléfono.
You also use para when receiving or giving, but there are so many other contexts, and it's a bit confusing sometimes.
Hello, how are you?
Try this article: http://aprendaportuguescomaluana.blogspot.pt/2015/01/quando-usar-porpelopela-ou-para.html
It would be difficult to think and describe all the different uses of this two words, but at least I'm going to give you two examples just in case it's helpful to you:
1-When trying to say a passive sentence in English, sometimes you need to say who or which was the performer of the action using the preposition 'by'. In this case, you always have to say 'por' as a substitute for 'by'. For instance: 'The question about the uses of 'por' and 'para' was asked by Lisa' --> 'La pregunta acerca de los usos de 'por' y 'para' fue preguntada por Lisa'.
2-When trying to explain the reason why you do something, you use 'para': 'Hice una pregunta para entender mejor el significado'.
I'm not sure if it could be useful, but you can try to look this words up in the online dictionary that the main Spanish linguistic institution has: www.rae.es
Here is another link Lisa.
In few words, para is uesed to describe an intended purpose, a goal, or a recipient. It is somewhat of an equivalent to the english "for" - not the exact equivalent, though.
Por ist used for the cause of something or for reasons. It is somewhat of an equivalent to the English "for + ing" - again, not the exact equivalent.
I can't write more details because italki keeps saying that I exceed 2000 characters although I don't...
Generally para implies a destination. Somebody or something receives or goes somewhere.
Por usually implies a purpose or an exchange: e.g Tres por dos.
There are several good vidoes on Youtube about this topic.
Here is a typical one, https://www.youtube.com/watch?v=8h1m6W4ZqgM
Also look for 'Butterfly Spanish' videos; She is an entertaing presenter and thorough too.