I am really interested in crochet.
It is a fun activity that involves loops of yarn or thread using a hook
How long does it take to "get the hang of it".
It takes a while, just like anything.  It was been around since 17th century France.
That's incredible. What's one of the most useful ways to crochet. What can it help me with in life?
Well, it is useful if you are an artist.  It is sometimes manufactured commercially and produced in artist workshops
How expensive can those creations be?
Not as expensive as ancient Roman pottery, that is for sure.  It produced back in anceint Rome, mostly for utilitarian reasons