Move arrow with square. How can I remove this box?

Question

Adobe Illustrator

Move Arrow: A small square appeared next to it. How can I remove this box?

Answer 1

I can advise you a sensible illustrator teacher - @art.em.po (insta)
he has his own course, there is a lot of information there - it will be useful for both a beginner and a working master.
If interested, here is the link:
https://artempo.tilda.ws/ai-shark