If you have resources in the last spot of the wheel, are you able to still turn the wheel? (so they will now be in the first spot again). I assume you can and they just move into the first spot
I couldn't find this on the English rules summary I had
Yes, your intuition is correct. From page 5 of the rules:
1. What if a section of the wheel with blocks is rotated back to Section I?
When a player rotates the wheel and blocks are moved from Section VI to Section I, the wheel is ﬁlled up to 11 blocks as usual. If blocks that were in Section VI are now in Section I, they will be more expensive.