Translation of revolutionieren

I hope you could understand my last letter to you. You see, when I write in Spanish I am not very confident. I always question myself and each and every sentence takes about fifteen minutes.
On Friday we are flying to Switzerland and then on Monday we will continue to Boston, Maine, Vermont and New Hampshire. I am very excited. Maybe this is going to be a great experience again.
I had to fly to Switzerland very urgently on Sunday, now I am back. Anyway, attached is a newsletter that will be sent to the users of Vocabulix. Should there be any changes, it would be nice.