1. File->Open Catalog
2. I don't know, but you might want to download LR 5.7 from Product updates
3. Catalog backups? Photo backups? Something else?
4. Yes, making regular and automated backups of your catalog file to a different hard disk than the working version is MANDATORY in my opinion
5. The Destination Panel will not appear if you select Add, it should appear if you select Move or Copy.
Thank you so much for your quick reply and helpful answers. I will do what you suggest tomorrow and let you know how it goes!
Question 3. They are catalog backups and there are many because I have it backing up each time I close Lightroom.
They are in C / users/my name/ My pictures/Lightroom/Lightroom 2 catalog Previews.lrdata (also 3, and 4 4.2 and 4.2.2) It uses up 250 GB (lightroom claims I have over 170,000 images!!!!!!!) What is going on? How can I get down to what I really have?
You can delete old catalog backups as you deem appropriate, I try to keep about a month of backups at a time.