I’ve made a new website, codynz.com, but I am wondering how do I increase my google pagerank, so that I can get better results??

Do some keyword research.. You can make use of https://adwords.google.com/select/KeywordToolExternal for that.. List all the possible keywords and emphasize on the ones that have higher values. Also you wouldn’t wanna target the highly competitive keywords for the start.. So chose somewhere in between. You can edit the title, description and keywords tags and include keywords in them. Edit your content using the keywords.. do not overdo it as that wud be counted as keyword stuffing. Then submit your sites on the search engines. It might take time to get indexed there hence it wud be better to follow other marketing methods. try to create many backlinks. Search engines usually give preference to site’s age, traffic and backlinks.. So if you can be good at atleast two of these then you might get good rank. for your site to get indexed by Google, try dmoz.org, for yahoo you can submit your site on their yahoo directory and so on.. Good Luck…!!!