Questions about the gameplay of Heroes 6.

Thank you. I have a couple more questions.
1. What are the "Tears" and "Blood" paths, and can both paths be upgraded?
2. Are skill points only awarded upon reaching a certain level, or is there another way to earn them? It seems like you get a very limited set of skills from a large number of options. Even each spell requires skill points. It turns out that the hero is very poorly developed (((