yes backlinks are very important for ranking and you can increase backlinks through
methods for getting backlink for a site are:
1) there are various online directories avaailbale where you can submit your website in the proper category (these directories aloow 3 types of links : i) free ii) reciprocal iii) paid inclusion.
I suggest you to go for free inclusion whereever possible
Paid inclusion should be done only if the directory has good page rank otherwise its waste of mony
Reciprocal links are of no use as google doesnt give weightage to them.
2) also post the details of your website in classifieds which is a better and quick ways to generate backlinks.
3) Article marketing is also a good way to generate quality backlinks.
4) Use social networking websites and create your profile and participate in discussions and q&a there, it will also help you increase backlinks.
you can also hire experts from SEOclerks.