To be quite safe you should stay away from blasting your website with poor quality backlinks. Especially if you buy them in bulk on sites like fiverr etc.

The safest possible way of building 1st tier backlinks is to do it on top trusted platforms by yourself, I mean for example blog platforms like wordpress.com etc. there are plenty of them you can use.

I seems the safest technique these days.

Many people will tell you PBN`s also is a good way to go, and I can confirm that, but PBN is a quite pricey solution.

I don`t know what is your budget but if you can afford go for PBN, if you can`t web 2.0 is a good option. That 2 techqniques are safest and most effective these days.

Of course web 2.0 alone means nothing, you must boost them with tiers. But it works perfect these days.

I would no do something so fast... And NEVER buy links!!! Work naturally, write articles (if it's a blog!), use Social Bookmarking sites, etc.

1. Private Blog Networks.
2. Contact the owners of related sites to find out if they sell links.
3. Donate to sites accepting donations and giving links in return.

Just a few off the top of my head.

Best idea is to buy your own sites and create a small blog network.

You can do it very cheaply by digging into expired domains for instance.

Get xrumer will do good for you

The best links would be the coming from websites related with your website topic, you should also avoid low quality websites and only build back link of those with good quality.

good quality backlinks takes times to develop.Try to find the same niche and approach the owner to have the links. It all depends on how relevant and good your content quality.

Private network high PR sites are good , You can find quality high PR links on other forums. That does not mean you should not get links from other sources for diversity and branding.

Yes,I feel.Based on the PR,we can able to get a good quality links.

Never buy back link because it is consider as a spam due to generate unnatural or inorganic way.
Try to generate quality back link from high PR and relevant sites that boost your ranking on SE.

Negotiation privately with webmasters, especially those that are not known link sellers, is a pretty safe and effective methods. You can find independent webmasters on various forums, not necessary those related to seo / make money online, even those related to technical aspects, programming, etc..

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Link buying and link exchange today has become something illegal as per SEO. Google today demands the natural link building so that the effectiveness of the ranking goes better at a steady way. And for that reason, experts demand that link exchange and buying should be absolutely ignored as per google's guidelines.

Buying links is not a good option. The best thing for your site is to get links naturally through off page SEO techniques. I would recommend directory submission, social bookmarking, blog commenting,article submission etc. Look for high authority and high page rank sites for directory submission. It may get you some quality links.

I have only had bad experiences with buying links. I prefer social bookmarking and RSS Sites.

The best places where you can get backlinks...
1. Social Bookmarking websites are great way to get backlinks, the top page ranked social bookmarking websites that set your backlinks as a Do Follow backlinks are the ones that you should use to build your backlinks.
2. Themed forums can be found by searching for your desired keyword then adding "forum" to the end.
3. If you don't have any niche directories to submit to and cannot find a forum that is themed towards your niche, you can still take advantage of unique content by submitting to a directory that lets you edit the contents of the page. By writing themed content that surrounds your link, search engines better understand what your site is about.
4. Try submitting to niche directories first as your best links will come from sites that are themed with the same content yours is.
5. Write original content for your descriptions and titles. By doing this you will avoid any duplicate content penalty that might get enforced in the future.

Build your own PBN

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