Page Rank Factors

Can we have more details in the list of factors.
1. Title - should be keyword relevant
2. Page Name - Better to use keywords like keyword.html. Is it ok if I use this format aboutus-keyword.html or aboutus_keyword.html.
3. Headings -

keywords

4. Domain name - www.autoterminal.com. However, since we need to use the company name then we do not have choice.
5. Content -

keywords

Is ok to repeat the keywords many times in the page or there are lmits.
6. links - http://usedcarsale.wordpress.com
Is the title and alt tag really seo useful?
7. Meta (description/keywords) - keywords.....
8. Images - keywords.gif - it is ok if we have keyword-productcode.gif or keywords_productcode.gif. please left me know.

9. Domain age - can you tell us about this...

10. Directory listing - quantity and quality.
11. keyword density - do you mean the number of keywords in the pages. I read there is penalty for too much keywords.. Is that true?

12. page size - You mean the bigger content the better?
13. Server destination - no idea. why?
14. Domain - co.uk for UK why?
15. Page Template - you mean using template for sites is helpful. Why?
16. Duplicate content - this is negative as google will penalize the page. Is that's true?
17. Bad link - link spam? you mean you link to a site that is being banned or punished?

18. Keywords position. you mean keyword position in SE? Explain please
19. Page Layout - you mean using CSS and less tables?
20. Foul language- why?
21. Number of links in a pages. So pages should have less than 100 links.
22. Title should be <60 characters.
23. Amount of quality content- explain pls.