whet sb's appetite (for sth) (increase sb's interest in and desire for sth / to do sth) — разжечь интерес к чему-л.; пробудить интерес, желание; подогреть интерес; будоражить интерес, любопытство
This book will whet his appetite for travel.
Example 2: That first lecture whetted my appetite for study.
Example 3: This book will whet his appetite for travel.
also
pique / trigger sb's curiosity
trigger the readers’ curiosity