Translation of heterogeneous in Spanish

This is not so easy, my dear! Unless you have learned Latin, then Italian is not an easy language... I'm new here, I found the site through Google. How does it exactly work here? I want to sign up.
I have always met nice people so far, and I have never had a strange friends request. So far I only had problems with my grammar in various foreign languages that I am trying to acquire.
Many thanks for your suggestions. They are very useful. I can't answer your mail now, but I will come back to you later when I'll have more time. I hope that you and your family are well!