Hehehe your english sounds pretty good to me, I have never met a Dane that can't speak good english.
Your first purchase as soon as you have some cash need to be a hygrometer, you have to know temps and humidity. Next up a PH meter.
U could always use ebay to buy your nutes, that way you can get Hesi or Canna nutes along with grow guides. For instance Im in the 4th week of flower in coco and mine are getting canna coco a, coco b, cannazym, rhizo, boost and pk13/14. I don't claim to know an awful lot about nutes but canna make it easy....although slightly expensive, a buddy of mine uses Hesi nuts and they seem top drawer and cheaper.
Hot air rises, the smell will rise, your carbon filter needs to be at the top of the tent/room, attach it using bunjie cord.
Hey for not knowing much you have got them pretty far, and, looking lubberly! WELL DONE!