From the Valentine Museum page:

Learn to interpret the spiritual, occupational, vegetal and fraternal signs and symbols found on headstones and iron works at Hollywood Cemetery. Discover the historical origins of monument styles including cradle stones, pyramids, pier stones, mausoleums and reliquaries.

Price: $15 Adult, $5 Child, $5 Valentine members
Length: 2 hours
Parking: On Street
Meeting place: Enter at Cherry and Albemarle streets, meet at the rear of the stone structure to the left.

Also:

Tour Notes

Advanced tickets are strongly encouraged. Space is limited.
Valentine walking tours are typically between 1-2 miles in length. We recommend you wear comfortable walking shoes and bring water.
Accessibility- People of all abilities are encouraged to join us for tours. If you have accessibility challenges or need accommodation, please let us know in advance.
Tours are held rain or shine. However, in extreme weather a tour may be cancelled. Call 804-649-0711 x 301 to verify the tour will take place.
Admission includes a $5 donation to the Friends of Hollywood Cemetery for ongoing restoration. Tours are made possible through a generous partnership with Hollywood Cemetery.