Welcome to SaleHoo! There are different advantages from the different product sourcing methods, and choosing which to use will often depend on the available capital /funds you have, as well on the stage which your business is at. :) Some employ a combination of sourcing items from a dropshipper, liquidation or from a wholesaler at the same time. I'd like to refer you to our Education Resource article discussing this to help you decide - Link hidden: Login to view
The first thing we suggest you do is decide what type of products you want to sell. Generally it's best to start selling something you are interested in because you are going to be spending a LOT of time thinking about it! :)
Once you've thought of a couple of ideas, it's time to start researching suppliers. This is where SaleHoo comes in. Use the search box to look for the product(s) you want to sell. When you've found some suppliers who fit the bill, send them an email asking what the best possible price is that they can give you for the products you wish to buy. A small tip for you: if you buy 20+ units at a time, you should be able to negotiate a better deal. It's also a good idea to contact more than 1 supplier before you start buying to compare prices.
And since you are living in Norway, and are intending to sell there, the suppliers need to be able to ship internationally. You can filter your supplier search in this line. :)
Hope this helps. Let me know how you would like to proceed. :)