As for supplies, you'll find all of the essentials in local stores ( the most prominant one that I saw was called ICA, pronounced eeka ). Rosehip or blueberry soup is great for breakfast with some bread, and they have a chocolate bar called "Brek" that is fantastic. I'll have to find a UK supplier.
The two main grocery store chains are ICA and Konsum; buy local in the smaller communites; for your purposes the chains are equivalent.
While I personally think the regular blueberry and rosehip soups are too sweet they have recentrly started making unsweetend versions, which are ok (still a total loss compared to scratch made stuff, but that is a given).
Small vocabulary for the grocery store:
Blåbärssoppa -- blueberry soup
Nyponsoppa -- rosehip soup
Havregryn -- rolled oats (for porrige)
Vetemjöl -- plain white wheat flour
Rågsikt -- a mix of rye and wheat flour, a good choice for field bread making
Jäst -- fresh yeast, sold in the refirgerated section in small yellow 50 g
packages
Torrjäst -- dry yeast; sold next to the flour in yellow "envelopes"
Bakpulver -- baking powder
Falukorv -- a standard sausage, a decent base for cheap meals (fried slices,
used as a "meat" in stews, etc).
Mjölk -- milk, the red cartons are 3% milkfat, the green and blue are various
grades of skim milk.
Blodpudding -- black pudding. Not as greasy as the offerings I've seen in the UK.
A base victual for children, not all brands contain actual blood (as
opposed to blood protein).
Smör -- butter (as opposed to various margarines, the margaries in foil wrap
are for baking and cooking, not on your sandwitch; use the stuff in
plastic tubs for that)
Renskav -- thin slices of rendeer meat, sold frozen in cardboard packages, a good
base for meals
Most meat sold will be pork or beef, most Swedes have a fear of lamb, and mutton is unthinkable as a food source to most.
Generally you will find the milk section a mine-field; filmjölk, kefir, yoghurt, långfil are all various lactobacillus soured milks, traditionally eaten out of a bowl with cereal (musli, corn flakes, whatever). Långfil is special, do try it. Messmör spread made from boiled down whey, some like it, some hate it (not for the lactose intolerant!); there is also mesost, which is the same product boiled down to a cheeselike state.
Cheeses are various, look at the fat percentage (large number on the package near the name); the lower ones are mild (often also labelled as such: "mild"), the higher ones are sharper ("stark") as a guide. There are varioius processed cheese spreads in tubes sold as well ("mjukost", convenient when hiking according to some). You can also get smoked fish paste in that form...
Bacon is of the streaky variety, not back bacon. Stekfläsk is salt cured slab "bacon", good for various cooking experiments if cholesterol is an essential part of a meal to you (fried slices, diced in cooking, diced and lightly fried in bannock, slices on-a-stick over the fire, etc).
We are very big on recycling; glass, aluminium, paper, plastic, etc all have their own bins in recycling centers, please try to comply (the green steel containers have example pictures as well as text, so there should be no problems). Glass in green and while plastic "igloos" (white for clear glass, any colored glass in the green ones). Any store that sells bottled water/soft drinks/light beer will take the empty for recycling (you pay a depeosit -- "pant" -- when you buy and get it back when you recycle).
Petrol stations generally have toilets for the customers,
generally a sign "WC" means a public toilet (sometimes with a sterotyped gents/ladies iconography; girls wear skirts). Sometimes out in the woods the icon is a sterotypical outhouse.
The public lean-tos (icon; a sitting person under a slanted roof) are on a first come basis, any provided firewood may be used (unless there is a fire ban, of course).
Personally I drink just about any "bush" water in lakes and creeks, others are fuzzier and/or have weaker stomachs. As usual; look upstream and use common sense.
