Sweden has a well-developed transportation network, and public transport includes buses, trains and domestic flights.
The largest provider of railway transport is SJ. It is possible to get low cost fares at their website when booking in advance. Low cost fares are mostly offered connecting the three largest cities in Sweden: Stockholm, Gothenburg and Malmö. SJ has trains going as far north as Umeå, Luleå and Kiruna. Another provider is Veolia Transport and their Snälltoget, that also offers low cost fares connecting Malmö and Stockholm and the Åre Ski Area in Jämtland.
Campng: In Sweden, the wonderful Allemansrätt has existed for many centuries only as a customary law, but since 1994 it is part of the Swedish constitution. As in other Nordic countries, the Swedish right to roam comes with an equal emphasis being placed upon the responsibility to look after the countryside; the maxim is "Do not disturb, do not destroy".
The Allemansrätt gives a person the right to access, walk, cycle, ride, ski, and camp on any land - with the exception of private gardens, the immediate vicinity of a dwelling house and land under cultivation, and with restrictions for nature reserves and other protected areas. This means that you could put up a tent for free almost anywhere as long as it doesn't disturb anybody. Make sure to not leave any garbage in the nature – we should really take the responsibility for those future generations will have the same democratic right to the nature as we have, and of course have any nature at all.. Very welcome to enjoy the Swedish nature!
It is possible to pick wild berries and mushrooms in most of the Swedish forrests. The season for berries is late summer and early fall. Mushrooms are in season from late summer until the first frost. You need to be very sure about what you pick and how to prepare mushrooms, since some are toxic in raw form, but edible in cooked and/or fried form.
It is also possible to fish in the many Swedish rivers, the five largest lakes and at most sea shores. There are different rules to follow and you need to buy a permit to fish where it is not free by law. SwedenFishing.com on fishing rules
Pre-paid SIM-cards (kontantkort) for mobile internet and mobile telephone services are available at different providers at frequently changing offers. The largest providers are: Comviq, Halebop, Hallon, 3, Telenor and Telia. These providers also have shops around Sweden, mostly at city centres and shopping malls. If you travel to more isolated areas in Sweden, like for example Laponia in the north of Sweden, the only reliable provider is Telia, who is responsible for the basic communications grid.
Wifi is available in many places for free. You can normally get at the public or university libraries for free. Sometimes you have to ask for a guest account.
Sweden is in the Schengen treaty. This treaty is rather well respected at the Finnish and Norwegian borders but has stricter regulations at the terminals where ferries from Denmark port, or at the bridge uniting Copenhagen with Malmö. Stricter control and special attention is usually applied to those who look like "being of another race". If you are unlucky, you might be made to strip during their search. Keep in mind, though, that the personality check is not applied to everyone but only to some at random order so you have more chances to quickly cross the border than get stuck explaining to the officials that you are neither a paperless immigrant nor a smuggler.
Freedom to roam
In Sweden allemansrätten (lit. "the everyman's right") is a freedom granted by the Constitution of Sweden. It is defined as actions that are not crimes, will not make a person liable to pay damages, nor can be prohibited by any authority. As in other Nordic countries, the Swedish right to roam comes with an equal emphasis being placed upon the responsibility to look after the countryside; the maxim is "do not disturb, do not destroy".
Allemansrätten gives a person the right to access, walk, cycle, ride, ski, and camp on any land—with the exception of private gardens, the immediate vicinity of a dwelling house and land under cultivation. Restrictions apply for nature reserves and other protected areas. It also gives the right to pick wild flowers, mushrooms and berries (provided one knows they are not legally protected), but not to hunt in any way. Swimming in any lake and putting an unpowered boat on any water is permitted unless explicitly forbidden. Visiting beaches and walking by a shoreline is permitted, providing it is not a part of a garden or within the immediate vicinity of a residence (legally defined as the hemfridszon). The hemfridszon's size depends on conditions but can be as large as 70 metres from an ordinary dwelling house.
Fishing remains essentially private—apart from on the biggest five lakes and the coast of the Baltic Sea, Öresund, Kattegat and Skagerrak. It is permitted to drive a car on a private road unless explicitly signposted otherwise. Small camp fires are generally permitted, but in some periods banned by local authorities due to wild fire risk. It is allowed to put up a tent on any uncultivated land for a night or two.