Many webmasters are asking whether it is PageRank important? For some webmasters PageRank is very important for others it is not. This is one of the first criteria, which was introduced by Google. PageRank is a rate for website given by Google based on the number of inbound and outbound links.
Better is your PageRank score, better is your website reputation. Each website has its own PageRank but need be indexed in Google. Usually home page have better score as sub pages. But this is not rule because there is a quite of exceptions.
PageRank can be improved by the fact that exchange links with quality sites that have a high PageRank. For start you need to submit your website in major search engine as Google, Bing, Yahoo!, DMOZ etc… Then as friends to exchange reciprocal links with you.