From Allods Wiki
Talents can be used to customize your character’s spells and abilities. The talent tree can be used to learn new active spells. It can be accessed in the talent tree tab of your Talents window.
Every time you gain a level you will automatically receive one talent point. Also, every ten levels you will receive one additional talent point. The talent points can then be spent in the talent tree to learn new spells and upgrade existing ones.
When you learn the first rank of a spell it will only cost one talent point. However, when you upgrade a spell to the second rank, it will cost two talent points and upgrading a spell to the third rank will cost three talent points. In total, it will cost six talent points to learn a rank three spell in the talent tree.
Additionally, some spells in the talent tree require a minimum amount of talent points to be spent before you can learn them. Because of this, certain spells can only be learned at higher levels.
After you reach level ten you will gain access to the talent grids. There are three talent grids in total, and each one is full of both active spells as well as passive abilities. They can be accessed in the lower tabs of your Talents window.
These spells and abilities can be learned by spending rubies to unlock the square they are in. Every time you gain a level you will be allowed to buy one of these rubies from your class trainer. The rubies must be bought with gold, and the cost of a ruby will vary depending on your level. After completing certain World Mystery quests you will also gain an additional ruby at no cost.
The first rank of a spell or ability can be learned by spending one ruby to unlock the square it is in. In order to buy the second rank, you must spend a ruby on the same spell or ability that is located within a different square. This means that there are many different ways that the various ranks of a spell or ability can be learned.
Not all of the spells or abilities in the talent grid will be immediately available. You may only access the spells or abilities that are located in the squares that are next to spells or abilities that have already been learned. This adds an extra level of complexity that must be considered when you spend your rubies. However, it also allows for a greater amount of flexibility for you can take different paths to learn the same spell or ability.