Wow, as a newbie I would have thought someone would point out my stupid mistake and I could move on, lesson learnt.
This is definately not meeting up with advertising of being simple, quick and easy!
To rename a layer, I click it and press F2, then type the name. Works for me.
Video drivers can be a cause of crashes.
Yes the forum is generally slow, and lately extremely so.
Edit: oops I missed p.2 of the responses