I wanted to make a layout that would insert info from several different fields into an HTML template, in order to copy and paste the code. I made a layout, just using text with tags for the fields, and the code appears the way I want it, but I can't select it to copy it. What do I need to do to make the same type of thing that I could copy and paste? Do I need to do a calculation and break up the code into sections, inserting the fields in between?

For the calculation field in question, choose menu Format > Field/Control > Behaviour ... . Set a tick mark at Allow Field to be entered in Browse Mode

But anyway: Why don't you use XML export and an XSLT stylesheet to transform your data to the final HTML? As soon as you need to merge various records into one HTML file this is much more convenient.