I have a 9 month old site with a few hundred high quality backlinks but when I check my pagerank its currently 0, has always been 0 and the predicted pagerank is 0 How many backlinks do I need to get at least a PR1
You need to get backlinks from pages with PR, check each page where your backlinks are, you will probably discover that most of your links are on PR 0 pages.
build backlinks from do follow forums and blogs in a similar niche to your own and you will get increased PR
You need to continue building links. Who gave you impression that you can stop at 100? It's what you did and that's why you are not rising in PR. I got my PR raise after hundreds and hundreds of links. Now its at some 700 or so.
Yep keep getting more and more links. If you are going after a competitive search term you need to develop some type of plan to keep adding new links on a regular basis. PR0 links will help very little in increasing your PR. If PR is important to you, you'll need to find some links with PR.
Predicted PR is worth less. Anyway, in order to increase your site's PR, get relevant backlinks. Try to get some backlinks from high PR pages like PR3 +
Quality of Links > Quantity Of Links Its really that simple... instead of a bunch of small links, less than a dozen high PR links could get you some PR... and remember, PR isn't everything, so don't stress too much
That's not correct, you can get a page rank of 1 with no backlinks as internal links are also counted. Your page rank is also limited by the number of pages to your site, eg if your site only has 1 page the maximum page PR you can get is 1. The number of backlinks to move up the scale is logarithmic, i.e it may take 10 links for PR1, 30 for 2, 100 for 3, 500 for 4, 3000 for 5 etc. A PR of 4 should be obtainable by anyone who puts in the effort, it's a lot harder after that. The OP has probably been sin binned by Google.
Do commenting on niche related blogs and than they will read your too . Maybe in future if they like any post than they can also wrote review on it . It is the best way to get back links .