There are two things you need to do with your cabin. You MUST use a preservative first, and then use a stain or wood colour.
We would recommend using either Sadolin or Sikkens, as they are high quality, and have a wide selection to chose from.
Generally speaking, the more you pay, the better the product, but do shop around.
Whatever you use, make sure:
1. It is a preservative, and not just a paint
2. It must have at least a small amount of pigment to provide sun protection.
3. It must be a waterproofer (many preservatives do not contain any waterproofing)
Whatever you do, don’t just use regular paint on your cabin. It will not allow the wood to breathe, and it doesn’t stretch, so it will soon ruin your wood.
It is just a log cabin though, so any good quality wood treatment will ensure a longer life.
As the wood is in individual pieces, you can take the opportunity to paint inside and out, and also get into the grooved areas, where you will be unable to paint later on.
Please ensure you treat your cabin within a week of it being put up.