Which is most advisable SEO friendly URL (URL structure) to start a blog in a website?

Hi Friends,

7 Tips for Creating a Good URL Structure

• Always edit a page's URL to be relevant.
• 
  Follow a standard URL structure.
• 
  Keep it short and simple.
• 
  Use your primary keyword.
• 
  Use hyphens to separate words.
• 
  Remove stop words.
• 
  Use canonical tags where needed.

There are some ways to to structure a good url. The ways are following
a) use single domain and subdomain
b) More readable for human beings
c) Keywords in url
d) exclude dynamin parameters
e) match urls to titles
f) avoid hashes / in url

First thing overall URL should be under 65-70 characters with space.

It should exactly very specifically related to the content.