backlinking is one best technique.
Here are some tips of backlinking:
1. Create High Quality Content – When readers talk about the information you give, they usually link you back, and share that useful information to others.
2. Submit your site to web directories – There are free web directories out there. Though they may not be a good source of traffic, the high
PR ones can at least give you the backlink you need.
3. Ask friends to link your site in theirs – Ah, this is easy! But they might feel bad if you won’t link theirs.
4. Put a link to your site as a signature in the forums you joined – This is applicable when they allow html in the signature portion. If not, put the link directly in your post, when necessary. But avoid spamming or you’ll get banned.
5. Reward readers to link to you – Did I write bribe? Make a contest and ask participants to link to you. A lot of people are doing this. Participants won’t really care about your ulterior motive as long as you have attractive prizes.
6. Comment on sites with Dofollow – The original intention of this is to reward commenters with a link juice. Take advantage of this, but leave well-thought-of comments. Don’t spam.
7. Persuade sites with high
PR to link to you - The persuasion is up to you. Go back to no. 1.
8. Too much link in such a short period of time can backfire – Search engines reward hard work and punish the crafty evildoer. As much as possible, gain natural/organic backlinks.