I have a few questions regarding SEO.
Currently i have 4 questions:
1. I registered a new domain with keywords in its name and promoted it a bit. A week ago bought an old expired domain with many backlinks and some authority but broad name without my desired keywords. What should i do next for better rankings, move my site to old domain or i can benefit from both domain names (how could i do it? 302 redirect just dropped my rankings!)
2. How many additional domains i can have to leech their ranking and squeeze it to my main site if it is a whitehat method?
3. How often does google update its rankings in search output? I've noticed that my old indexed page dances in rankings without changing its description in google, while i change things on host (like: i've changed page title - page advanced to 3 positions in a few minutes, but google still displays an old page text in output). Therefore, can i optimize things until i get at top10-20 or i need to wait before i make any further page title\kw\text updates (for how long)?
4. If i have a ccTLD domain would i have any benefits if i register the same domain name in .com\.net\.org zone?
Guys, i would really appreciate any help because i am already tearing my hair out with all this seo... thanks in advance.