there are a lot of techniques in building high quality backlinks like marketing your articles. what you have to do is to produce a quality article; coz if you don’t then your article won’t be republished. Republication is the goal of article marketing. If you throw an article and it’s loaded with spelling and grammar error than its not going to be much use to you. Always think that you still have your readers--- who will think about and will form opinion about you based on your articles. And if your article are well-written thoughtful and helpful, then readers will come a way with positive impressions of you.
That's right. You have to create and build high quality contents. That is very very important. if you need to hire a very good content writer why not? I mean, you'll be able to withdraw all you investment later.
You can build quality links by getting backlinks from authority sites in your niche, if your site is new ofcourse you would have to have something compelling to cause them to link to you
Do you have an idea how to get links on authority sites. .edu and .gov would kinda be hard to link to.
For quality backlinks Do regular forum posting, blog commenting, social bookmarking on high pr sites.