I got stuck on the item tutorial level, it said I didn't need two of the items and wouldn't let me pick them up. I should try again.
You didn't get stuck because of the items not picked up, but only because you didn't pay attention to... naaah, I won't spoil the fun unless you ask me to

BTW: if you were told that you didn't need any item, is only because you first picked up better ones - which means that you didn't pick up the items in the order they are presented.
TIP (for everybody): even if the very easy missions try to introduce the game as gently as possible, there are a lot of details that are not so evident... the best thing to fully enjoy the game right from the start is having a good look at the manual

The reason I asked about your manual being in English is that you are based in Italy, so I wondered whether you had any Italian customers wishing for an Italian language manual.
Oh, sure. People also asked for an Italian version of the website. But I'm doing everything on my own (including shipping the packages), so that doesn't leave much time & energy for maintaining double versions of everything. Not to mention that two different versions of the manual would have made the costs sky-rocket.
In terms of your boxed edition, is Editol a separate company or is that still you?
No, it's a separate company. I'm just a private individual.
Is there anything you would have done differently if you did it again?
Nope.
I must admit, as a mac owner, I felt slightly disappointed to hear that the disc version was Windows and Amiga only.
I can understand that and I'm just sorry as well. I'm also sorry that future versions won't be on the pressed CD-ROM. This is another reason why I made an updated ISO image.
Unfortunately, I don't own a Mac, so I could not know beforehand how long it would take to make the port. Not to mention that testing would have delayed things even more. At some point, one has to draw the line and call the product finished.
The sad irony was that after the CDs were ready, due to the Italian messy laws, there has been a delay of 2 (!) months since sales could finally begin. In those 2 months I decided to develop the game further and port it to Mac - in fact, update1 was released only a few weeks after sales began. A real pity

Does your boxed edition include room for an extra burned CD?
Yes, but, as you can imagine, the CD on the top can't stay firmly in place. It would be better to keep it inside the booklet.
I think your pricing is very reasonable, I hope you do well.
Thanks. I wanted the price to be honest and low, because I knew that postal expenses (and taxes, for countries in the VAT area) would affect a lot the end-user price.
Have you had many sales of the disc edition in comparison to the Iso-only edition?
Digital distribution has been going on for just 1 week, so it's a bit early to say.