I would like to know what are the things that help Bitcoin to grow , and when I say grow I mean price rise.

I mean , would making a website that sell digital goods for Bitcoin helps ? or it won't make any difference , I'am really new at this and not sure how it works

Bitcoin growth is not indicated by its price. Price of bitcoin in the long run is determined by the supply-demand equation of economics. But in the short run it is affected by several micro factors.
Growth of Bitcoin will take place when more and more merchants will accept Bitcoin and they'll be able to pay with Bitcoin as well. That is to say, not like what overstock or tiger direct is doing today. Get paid in Bitcoin and dump it in the exchange. So we need more businesses coming out of Bitcoin ecosystem, rather than outsider FIAT giants accepting Bitcoin.