Questions for Boox users

Hi! Before buying a boox (specifically the boox go color 7 gen ii), I just wanted to ask about a few things:

1. Is the dictionary available offline? Like will I be able to travel and still look up words thru the ereader app?

2. For books with notes (especially classics), are there hyperlinks you can press to go back and forth between the OG page and notes section?

3. What videos did you use to figure out the settings you guys like? (If you didn’t use any videos or tutorials for reference, let me know what settings you use!)

4. How fragile is your boox? I’m planning to buy a case and pouch to go along with my boox but I’m still not sure if i’ll need more protection…