Eight sets of skills become available as you bring specialists back to the village and build their huts. As you earn XP by completing objectives, skill points are earned which in turn can be spent on these skills. There are a variety of skills to choose from, some better than others for your play style. Some speed up resource collection and crafting, several boost your combat abilities, while many improve healing.
Access the Skills menu to see all 79 skills, how much they cost, and unlock prerequisite. The icon shows whether an ability is available for purchase.
Lines between the skill icons note paths you must take. The middle skill in the first column is always first and then it goes from left to right. Take a look at upcoming skills to see which paths you wish to take. Consider your playstyle and trouble areas. A health boost is usually a good skill for anyone to pick up. Beast Master Skills are good if you like to leave fighting up to your companion. Fighting Skills offer up some great takedowns for those who like to fight more tactically. Crafting Skills are great for getting the most out of your resources.