Translation of bonehead in Spanish

I would like to give you a proofreader's project. Proof reading sample sentences that were entered into the dictionary by our users. It is a very tough project and needs a lot of discipline and patience.
Spanish is very important and widespread. I want to improve my skills with the help of Vocabulix and its users. I'll be there looking for people and I hope that my new efforts will be helpful.
Why are people from beautiful Latin America immigrating to Germany? I have often experienced problems with the time forms used in Spanish. I need urgent assistance. I can correct you in German.