Free spells gained when going up a level must be taken from the Core Rulebook.

Other spells must be purchased (or obtained via 'adventuring') before they can be learnt. The cost of these spells is higher than normal due to their rarity.

As for Arcane spells, Divine spells can only be selected from the Core Rulebook unless the character has had a chance to study them first. Temples, NPCs or scrolls are possible sources. Temples and NPCs will generally charge for access to these spells.

Once studied, such a spell can be selected normally.