Thank you, I think if you remove it that will be best.
My son will be able to help me grasp the basics when he is next home.
Thanks for being so helpful.

Ok sorry, it was my first try and i was trying to follow the tutorial and have a go. I realised i had made a mistake but couldn't work out how to correct it.
I don't think Open street mapping is for me.
Hope I haven't made any serious damage.