Translation of matrimonial

I would rather like that you write through the messaging system on this site and not to my private email address. All the info is gathered here online and I would like to keep is this way. It is nothing personal.
Could you please read the following offers in a critical manner and confirm it before I will send it? I have also mentioned the warranty and the software in the offer, because it was requested by the customer.
I've chosen a subject but for now I take a lot of art and language courses. Thank you for your tips! They helped me a lot. My uncle is a music teacher, but my father studied economics.