Start with about 500g of honey in a 23 litre batch. Just use it as a replacement for the same amount of sugar.
If you're doing a Pilsner kit eliminate the sugar altogether. Add 500g honey and 500g of dried/liquid malt extract or body brew.
Maybe steep the honey in some boiled water with your kit and extract as per normal. This should pastuerize the honey to some extent. Don't boil honey for too long or you'll drive off it's aromatics.
A good idea is to go for a lighter coloured honey in this instance. I've had some pretty good results with Orange Blossom.
Warren -