I've been wanting one for a while now, and my parents are telling me to look up how to take care of one, but i just really want to know if it's really hard, or if it takes skill, or something like that.

Arigatogozaimasu (thank you in japanese.{i'm not japanese})

Bonsai is an artform. Unlike horticulture (regular plant care) bonsai requires training and education as to when and how to trim and train the plant to do what you want.