If you have loads of time to read, this may be interesting to you.
ipullrank.com
I'm still reading everything myself, but feel free to join in.
Secrets from the Algorithm: Google Search’s Internal Engineering Documentation Has Leaked
Learn what you always wish you knew about Google's algorithms.
- They do not use SERP click-through rate to re-rank pages.
- They do not treat sub-domains as distinct from main domains.
- There is no concept of a ranking sandbox.
- They do not consider the age of a domain in their ranking algorithm.
- There is no site-wide authority score.
I'm still reading everything myself, but feel free to join in.