1. There are short episode blurbs on the L&C page on
www.tv.com: Lois & Clark Each blurb is a paragraph long, but some of the paragraphs are *very* short. I don't know if you'd get enough of the details that you need from there, but it's worth checking out.
Also, Zoom has an episode guide online -
Episode Guide 2. IIRC, Dr. Klein's first appearance was in the season 3 episode "Don't Tug on Superman's Cape".
3. Yes, the first appearance of the New Kryptonians was at the end of the third season. It was a two-part finale. That first episode was called "Through a Glass, Darkly". Then they appeared in the next three episodes, the final one of the season and the first two of season 4.
4. They had a space-to-ground vessel. Several times we saw the inside of it when they were on Earth, before Clark left with them. In the fourth season opener, they flew in this shuttle to the mother ship that was orbiting. I can picture the view of the mother ship, but I don't remember if we ever saw a shot of the outside of the shuttle itself.
Hope this helps!
Kathy