We've seen that nouns that end in ‑o (like ragazzo) are usually masculine, and nouns that end in ‑a (like ragazza) are usually feminine. But there are exceptions! Some words end in ‑a, but can be either masculine or feminine.
Most nouns that describe professions and end in ‑ista (like musicista and dentista) will be like this.
Are you crazy about Italian art? Many nouns that end in ‑ture in English are very similar in Italian.
These words are usually feminine.
In English, we say I like art, but in Italian, you'd say Mi piace l'arte, which literally means To me art is pleasing.
If what you like is a plural word, use piacciono instead of piace.