Beginner questions about on-page SEO

Selected answers from the Dumb SEO Questions Facebook & G+ community.

• 
  Michael Martinez: "1.I guess for the keyword/content related seo I should use seo consultants who are fluent in one of the languages my site is translated?"
  
  If you`re going to use SEO consultants at all, then you absolutely should use those who work in your language as native speakers. They need to understand the idiom people use when searching for information.
  
  "2. And I guess rest of the onpage optimisation such as page speed, I can just use english speaking consultant?"
  
  English doesn`t give anyone an advantage in speeding up Websites.
  
  You want:
  
  1) Fast hosting (using SDD storage and not HDD storage, lots of RAM, more CPU cores, etc.)
  
  2) As few resources per page as possible (combining CSS and Javascript files is far more effective than minimizing them)
  
  3) Use fewer images, and/or lazy loading methods. Image files should be as small as possible.
  
  4) Block as many rogue crawlers and botnets as you can. They tie up server resources and slow down sites.
  
  5) Pay for adequate hosting. The more visitors a site receives the more likely it will reach its rate-limits on shared hosting plans.
  
  Don`t worry too much about site speed as an SEO factor. It`s more important for the user experience. Only the slowest sites need be concerned about what the search engines think of their speed (although Google says that could change in the future).
• 
  Jef Van Gool: Always use native speakers and for tech stuff the language doesn’t matter indeed. But if you can’t communicate with them that would make it difficult to explain