This country is part of the Arab world, and the population is mostly Muslim.
The currency is the Egyptian pound (EGP). As for August 2015 1 EGP = 0.11 EUR = 0.12 USD
It is possible to hitchhike and even quite easy. The problem is that the concept of hitchhiking is almost unknown, and you will sometimes loose a lot of time and energy trying to explain it. Also it happen that the police doesn't let you hitchhike, and even prefer to pay you the bus if you say you don't have money. When hitchhiking remember to tell to the drivers that you don't have money ("la flouz") because any car is a potential taxi.
There is a train running from north to south following the Nile. It is quite cheap (someone can add price info?).
Transport inside cities
It cost usually 0.75 to 1EGP for any transport inside city, except in Cairo where it can go up to 2EGP. This is true as well for motor boats (the governmental ones) or 'felucca' (Egyptian sailing boats). In tourist places like Luxor or Aswan they will try to fool you. The best is to have your money prepared if you can and just give it to them.
- Airline: Norwegian
The hotels in Egypt can be very cheap. If you are lucky and negotiate well you can sometimes find rooms for as low as 10-25 pounds per person (1€-3€).
Wild Camping can be difficult, Egyptians are everywhere and they will sometimes not let you wild camp because they think it's not safe if you look like a Westerner you. If you are lucky you can get invited to stay at the people place.
Hospitality networks work really well in Cairo and probably in other big cities in the North, but can be difficult in other parts of Egypt.
Food is quite cheap. The problem is that like with everything you will buy, Egyptians will try to make you pay more than the locals.
10 pita breads should cost from 2 to 5 pounds. You can also find falafel sandwich for as low as 1 pound sometimes, but more usually 2 pounds. Street food is anyway a good choice.
Hotels are a good bet. Ask before if you need to pay. Be careful with cafés written "Free Wifi", it is sometimes not true, and it happens a lot that it doesn't work. Check the connectivity before ordering anything.
To enter Egypt you have to get a visa on arrival, and it cost 25USD. It will be valid for one month, but you can probably extend it easily.