How should I do back linking?

Focusing on on-page and content as well. Try to build backlink with some reason and source should be relevant to your website's flavor if you get dofollow backlinks so this is much batter.

My questions are still Unanswered .!

Hi Mohsin bro,
Here is your answer-

1. Yes, you should. It will build more authority on your domain.

2. If you make backlink of any of your post, you can do both. When making backlink by blog commenting you can paste your Post URL on ""website" section. (You can use hyperlink as your keyword on comment if it is worthy!)

3. Yes you can use links of Wikipedia and Google as reference on your blog article. It will add more value. But you should be cautious , not to interlink any low quality site.

4. Follow white hat link building methods to avoid spam while building backlink.

5. If you make too many baklinks in a short time then google or other search engines will consider you as spam. So, it is better to go slowly and build backink naturally. (it has no specific calculation)

6. You should focus on both dofollow and nofollow. Dofollow link has more value. I think the percentage of dofollow link should be more than nofollow.

Hope these will help you!
Good luck bro.

1) I think it's a good idea to get links to individual articles too, but it depends on whatever you're trying to rank for.

2) If you want a backlink you need to have a link. Not just a text mention of your domain.

3) I'm not quite sure what you even mean by this. Links from Wikipedia and something like Google+? They're not worth much for your SEO efforts. Wikipedia links are nofollow, and the links from Google+ that aren't nofollow are on a page that's typically weak.

4) Not enough information to answer. There's a ton of different things that can be considered spam, and even several in SEO circles.

5) That's the wrong question. Have as many as you want as long as they're good links. But since you're "doing" your links they probably aren't.

6) You should try to understand what makes a strong backlink. Nofollow doesn't help at all so having "followed" links is better in that regard, but having weak "followed" links doesn't really help either.

You should follow google's rules and guide lines to avoid things .