I'm glad that you're enjoying reading through it and I hope you get a chance to play! As to answer your questions:
1. You have it correct, where you get to perform each of those actions in a turn, not just 1. Several Active and Attack abilities are even designed to be performed in the same turn. And these can be broken up in any way needed, such as moving before and after attacking.
(Special related note that people miss a lot too: Reactive abilities can each be used once between turns, not just one reaction per turn like in D&D)
2. All the Tier 1 "Clothes" items are there as cheap enchantment items, so they don't have any effect until enchanted. I have plans to make an expansion with a bunch more items and crafting items so they don't feel quite so out of place.
3. And yep, the Wand item is simply sorted as a "Focus" in the Mage Tower shop, which are required to cast Spell abilities (which is covered in the ability type breakdowns in chapter 2). I'll have to double check the item card, as I know there are some mistakes in those that I need to go through and fix to update.
Let me know if you have any more questions! Definitely more responsive on Discord if you have one :)