Hi! Maps can be bought in any outdoor store and in quite a few bookstores as well. "Fjällkartan" is what you need, I don't remember the numbers, but it should be easy to find out. When it comes to equipment - depends upon what route you're taking, the Western route to Kebnekaise is a walk-up so proper clothing, good boots and, probably, trekking poles is all you need. Be aware, though, that summer starts quite late in these latitudes, there can be a lot of snow as late as Midsummer.