Best way to make legitimate backlinks in 2018

You can create high-quality backlinks via the following methods-

Guest posts (same niche)

Blog comments (same niche)

posting in bookmarking sites

Best is the guest post. Because this gives you quality from the well-ranked pages.

Other are community sites, it could be any site including social sites and business site and also a community site like this one here (indiblogger.in)

Some business community sites allow you to post articles and greate groups for discussions and this is where you can put your site link in a good manner.

Thank you Manoj sir,

Thank you for your informative idea