Verb conjugation of "dispatch" in English

I have contacted you 12 months ago to propose your school's inclusion in our language school directory. I wanted to inform you that our site achieved high positions in search engines last month.
Was that all? I was sure that I had a lot more mistakes, because I did not know how to express myself properly. Maybe I am a natural born talent. I am just kidding. Let me know if you need something else.
I want learn Spanish because of my girlfriend from Guatemala. She is from Latin America. And of course I want improve my grammar too. I like to hear it, but speaking is still hard. Hasta Luego.