How to find this house
Find the ascendant sign and count it as house one. Continue one sign at a time until house 5. The entire sign is assigned to that house in the whole-sign method used by the Kalika beta.
A house can be empty of planets. Its existence and sign do not depend on whether a planet appears inside it.
Traditional study topic
The fifth house is five signs from the ascendant, counting the ascendant as one. Study traditions associate it with learning and creative expression.
These associations organize a tradition of interpretation. They are not outcomes calculated from a house number, and different schools may give topics different emphasis.