Kronorus is the highest of the deities. Kronorus created the universe, all of the planes of existence and the major gods. Kronorus is responsible for the flow of time and existence itself.
Kronorus sets themselves apart from the other deities, not just because Kronorus was the ultimate creator of all of them, but rather, in how Kronorus acts and is involved in the affairs of mortals.
Most gods have strict demands of their worshippers. Kronorus, however, created merely to watch events unfold. There are many different interpretations for how this translates to worshipping Kronorus and many of them do seem to earn favour.
The first, and currently the most popular from what you have heard, is that you should create events that are interesting for Kronorus to watch. The ultimate path to doing so is considered to be to disconnect yourself from your humanity and ethics and view the world, yourself, as merely a series of events.
The second, which was more popular in Kronorus's history, is simply to watch with the deity. Take no active role in shaping the world, but instead be along for the ride and carve yourself into his image. Many people who follow this school of thought take it upon themselves to document events meticulously as they transpire.
The third, and by far least popular, is to simply thank Kronorus for the world’s existence and to try to be true to who you were created to be.
There is no right or wrong answer, at least none that Kronorus has confirmed. How you choose to worship is largely considered up to you.
This represents information about a deity that is less well known, but not intentionally hidden. With a little research you should be able to find this information. A Knowledge (religion) roll of 15 should suffice to divine information from the Advanced Knowledge section. A follower of the deity would only need to roll a 10. A more devout follower may know this information automatically.
Obscure Knowledge represents what only the most devout followers of a religion would know about. For somoene outside of the relgion to find this information, it would take significant research. A knowledge (religion) roll of 25 would be required. Followers of the religion would have this reduced to 20.
Hidden knowledge is information that has been intentionally obfuscated or even had references to it destroyed. Usually this will feature facets of a deity that would be considered evil or repulsive to the deity's followers. This information can only be uncovered through gameplay.