As a fellow U7 noob and IE game fan, I understand your pain. There's a pretty good description of movement controls in this forum already (check down a few threads).

The only thing I would like to add is to absolutely make sure to download the additional documents offered by GoG. The cluebook is extremely helpful, and the quick reference docs are the ones you want to read to learn the controls. Don't forget about the hotkeys, especially "Esc," which closes all open windows. You'll be thankful for that when you have 6 characters' inventories and status pages open at once! The "s" key is the other one you'll want to use often. Other than that, single clicking on something tells you what it is, and double clicking interacts with anything.

Navigating the world was the hardest thing for me at first, but the cluebook helps immensely. I printed out and translated the map that comes with the downloads, and now I've found that I can actually read the signs (they're not written in English!) as well.

That's all I can think of for right now. Hope that helps!

AquaBoar