Translation of Brennwert

In addition, may i know whether you are using external resources to translate? It is very important not to copy words from other dictionaries. Better to take just the best two translations for a certain word and not all translations.
Everything's fine over here. The weather is a bit crazy, but otherwise everything is ok. I wrote this one based on what you gave me previously. This is a very common form of saying it in Spanish outside Argentina.
Thank you for your kind message. I have not done anything for my Spanish because I have too much work at my job. I might write you a letter, but I'm so busy at work that I can't afford other hobbies.