Translation of aerodinámica

Well why are you doing that to yourself? That is very hard. You can easily write in another language, if you prefer, because I speak many languages and I can understand many more. I only have problems with writing.
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.
If you are spell checking my letters, that would be great. I would then do the same with your letters. Can you please correct this email too? I thank you in advance for helping my Spanish.