Hey i-Nepali. I myself did some backpacking in Europe, and well I have mixed experience, as always. When entering Europe, you will get Schengen visa which will allow you to travel to most of the countries in Europe, but you will have to get seperate visas for each of the eastern european countries you want to travel. Then majority of expenses is on accomodation and transportation. If you carry a good sleeping bag and a light tent , you are likely to get place to pitch a tent. As KG already said in rural sweden rule allows you to pitch a tent in anyones property for A night, and similiarly there are lots of camping places around every major cities around europe. Transportation cost in europe has gone down significantly in last few years , as new low cost airlines emerged. But travelling by train is the best method. If you have been living in any european countries for last 6 months , you are eligible to by INTERRAIL pass. One month of free travel in all the interrail countries( includes bulgaria, turkey, and tunisia too) will be the best option and if you are under 26, there is heavy discount to avail. Last but not least you can stay with other nepalese, they are everywhere of every type, some are nice and some are not so nice. some are helpful and some resent the fact that you have time and money to travel around europe. Well good luck. Keep on posting your developments.