Translation of nachstehend

I will send you a summary of the activities from our last vacation last year, but I will be brief, so I will send only the highlights. It is best if we discuss everything, in the beginning of August.
True, I forgot the 'I' when I have copied and pasted the entire text field. I assume it is the regular form, isn't it? However, the formal form in Spain is a little different to what we are using in Mexico.
I'm learning German for a year. I do not write well, but I hope to improve soon. This is precisely why I want to make friends on vocabulix. In August I will fly to Berlin, it will be my first time.