Grammar Lesson no.2: I or me?

This one is easy: if you can re-phrase your question, statement, sentence, etc with just "I", then use ''I".

For example: ''Jane and I are going to the shop". You could take out ''Jane" (poor Jane!) and the sentence would still make sense: "I am going to the shop". (Of course you would have to change "are'' to ''am''). It would not be correct if you were to say "Jane and me" because then if you took out Jane it would change to ''me am going to the shops".