Translation of Luftausbruch

It actually happened to my cousin's youngest kid. He was repeatedly warned not to smoke in the courtyard of the school. At the end he found himself expelled from the school. It could have been an interesting experience for him though.
How is the weather in Hamburg? We have 15 degrees and some sunshine here in the south. I have some remarks on your mail. If you write again and if you wish, I can correct your spelling mistakes.
Today I have a lot of time because I've just returned from a 3 day vacation. For how long have you been teaching German? For about 3 years I have been studying Spanish mostly alone, with books and stuff.