One who dabbles in fine arts for the love of it and not for monetary gains
A). Connoisseur
B). Amateur
C). Professional
D). Dilettante
Amateur
One word substitute is Amateur.
Connoisseur: an expert judge in matters of taste.
Amateur: a person who engages in a pursuit, especially a sport, on an unpaid rather than a professional basis.
Professional: relating to or belonging to a profession.
Dilettante: a person who cultivates an area of interest, such as the arts, without real commitment or knowledge.