White hat and black hat SEO are two different types of SEO. Google does not consider black hat SEO. Black hat SEO techniques might have some short term positive effect, the long term implications can be disastrous for your website and in turn your business. So don't try black hat SEO.

Link Building is best way to drive traffic or increase visitors on your websites. Link Building helps you to get SERP. Social Networking websites are also best ways to increase visitors for your website. Just post links in Social networking sites and grow your friends community.

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Thanks,

Yes, I agree that for Keyword Ranking Title tags play main role. It will be very informative post for learner who wants to learn about Title Tag in On-Page SEO.