Getting there turned out to be fairly straight-forward, if not well sign-posted. We were able to take the Metro from Nieuwmarkt straight to Bullewijk* station. We bought 2 x 1 hour tickets each for 5 euros so that covered us both for the return journey. We could've bought 2 x 24 hour tickets but that would've been 7 euro each and we weren't planning on travelling on the Metro again during the 24 hours. We exited Bullewijk station and turned right and walked until the first major intersection and then turned left and Ikea was already visible. The first entrance we found was through the carpark so I think the general idea is to drive there rather than take public transport.
* One amazing thing to note, after we got off the train it started to leave the station then suddenly slowed down and came to stop... just to let a mother and her child that had arrived late get on the train! I can't imagine that ever happening in London, once a train has started moving the drivers there wouldn't stop for anyone.
So we wandered around Ikea for a couple of hours finding the bits we
Getting everything home was pretty easy too, we only had to pay to have one item delivered and that cost 39 euro, fortunately they were able to deliver it later that same day. We managed to carry the rest of the stuff home via the Metro. Easy!