Your post is not too long (compare it to mine...
True, but seeing as I'm the one seeking an answer, I'm only grateful for that.

I did a clean-up and everything; last time I figured out that I can delete the *.sdf, but I wasn't sure how I could get rid of the precompiled header (4Mb). The clean-up took care of that, so I hope this one will work:

learnlang2.zip

Do you really need the second form?
A few weeks ago I asked in the Visual C++ forum how to handle changing screens, and the answer was that I should use multiple forms (along with that I should have posted in this forum). First I tried working with multiple panels, and always toggling their visibility to change the screen, but that didn't really work out.
And yes, I hope that my need to do this, (or a better explanation of what else I could've done), will be clear from the program.

It looks like anything you're doing in textBox1_KeyPress() would be better done in a TextChanged handler.
Well, I didn't try it out, but seeing as pressing ENTER doesn't change what's in the textbox, this didn't occur to me. We'll see if it works.

Just no double click, please...
I agree. I made this program in Freebasic 2 years ago, where I didn't implement the mouse. UP/DOWN changed the selected list, ENTER started to ask a list, and E started to edit the list. Now, since double clicking starts asking the list, the first idea that occurred to me was for right double clicking to edit the list. The context menu idea is better because I also need a way to delete the list, and add a new list, so I can just add those options to the context menu.

As for the memory problems, the truth is right now I don't care that much, I'm trying my best to make sure everything is handled correctly & marking where I'm not sure. If there is an error, I think that (probably) I will encounter it while using the program, in which case I can go back, find it, and fix it. I once had a pretty tricky memory error in a towerdefense game; sometimes it crashed after 7 minutes of playtime, or 15, or I went through a whole 45 minute game without it crashing; and I found it! So once encountered, I hope I'll be able to fix it

-Tusike