Which one is easy and effective method in SEO?

easy? seo is not easy but if you correctly you can result for sure. you can try to build do-follow link through guest posting, and try make pbn so you can achieve your seo target.

-- Content Marketing
-- Link Building
-- Social Media
-- Forum Posting
-- Social Bookmarking
-- Local Listing

Few important techniques that will help you in ranking.

1. Content Marketing
2. Web 2.0 Submission
3. Forum posting
4. Guest Blogging

CarolineMurphy said:

3. Forum posting
4. Guest Blogging

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technoseo said:

-- Social Media
-- Forum Posting
-- Social Bookmarking
-- Local Listing

Click to expand...

Not so much.
You may want to check out this thread:
https://www.namepros.com/threads/bad-seo-advice-that-doesnt-work.1015400/#post-6124099

It all depends on keyword difficulty. In some cases, on-page SEO + social media will be enough. In other case, you need to use more complex strategies and even PBN. The most important thing to start with is on-page SEO.

Social media's great for promotion but doesn't help organic SEO - has been reiterated on several occasions that it is not a ranking factor.
STC explains the reason well here:
https://www.stonetemple.com/googles-matt-cutts-understanding-social-identity-on-the-web-is-hard/
If they read a page with a followed link, its treated like any other followed link.
As for PBNs - depends on your risk tolerance and how well the footprint is hidden. PBNs work, but they're a blatant quality guideline violation which makes them risky - how risky depends on how well the network is managed and how "private" it really is.
Setting up and managing one well isn't "easy."
FWIW, none of my corporate / business clients use them and they do just fine.

Blogging and content Marketing is best way to get huge traffic.

hi,
some important seo tools are helpfull in ranking

• link building
• Technical seo
• keyword research
• Rank tracking
• Content optimization
• Backlink analysis.

Regards,
socialmediatree