Olympia: The Age of Gods PBEM (Oct 4 2000)
A fee of 100 gold is charged when study
is first issued for a
skill. The payment is used to acquire various materials needed for the
study and eventual practice of the skill.
Some skills also require one or more noble points to learn. These skills are clearly marked in Appendix - Skill Dictionary.
In addition to these fixed costs, there is a charge of one additional NP for the category skills a noble learns in excess of three skills, i.e., for the fourth, fifth, etc., category skills a noble learns there will be an additional 1 NP charge. (Basic Religion [3500] and Advanced Sorcery [3300] are ignored when counting a noble's skills.)
Note that religion and magic skills count toward the three skill limit, and if you study religion or magic as your fourth skill, it will cost 2 NP (one for the normal cost and one for the fourth skill).