1. What is the nearest airport?
If you fly, it is definitely Budapest Airport that makes the best destination (http://www.bud.hu/english). It has 2 terminals: Ferihegy 1 mainly for budget airlines (including, among others, Clickair, Jet2, easyJet, Germanwings, and Wizz Air), and Ferihegy 2 for traditional airlines, including flights to and from non-European destinations. Ferihegy 1 is closer to the town, but it is also on the way if you are coming from Ferihegy 2.

2. From Budapest to Debrecen
If you arrive in Budapest, it is the best and the easiest to take a train to Debrecen. The timetable is available at http://www.elvira.hu. Some trains depart from the Eastern Railway Station ("Keleti Pályaudvar"), and some others from the Western Railway Station ("Nyugati Pályaudvar"). Each can be reached by the underground, and there are also various buses and trams. Here you will find everything you need to know about public transport in Budapest, including a link to a route planner: http://www.bkv.hu/english/home/index.html. The train service between Budapest and Debrecen is pretty good during the day, and you always have a chance to catch a direct train. The journey is between 2.5-3.5 hours, depending on which train you take. Intercity trains are faster, because they stop less frequently. A full price ticket for a single journey is 3.380 HUFs, plus an 540 HUFs supplement for IC trains. If you are an EU citizen under 26, you can get a 33% discount on the train ticket between 10:00 Friday and 24:00 Sunday.

3. From the Airport to the train
In general, you do not need a taxi. Some of the trains stop at a station right outside terminal Ferihegy 1, so if you land there, you are lucky person (check out at http://www.elvira.hu if your train stops at "Ferihegy"). If you arrive at terminal Ferihegy 2, you can just simply take the Airport bus (bus 200) from the terminal for the price of a regular bus ticket, and get off at Ferihegy 1. Train tickets can be purchased inside the Ferihegy 1 building. If you need to go to either of the railway stations mentioned in the previous paragraph, do the following. Take the Airport bus (bus 200) from either Ferihegy 1 or Ferihegy 2 and travel to its terminal, the Kőbánya-Kispest Exchange. The Exchange itself is a leftover socialist design, so you can already have fun with interesting people in an interesting piece of construction. From here, take the underground M3 (enter the building and go down the stairs to the nearest platform) directly to Nyugati Pályaudvar (Western Railway Station). If you need to go to Keleti Pályaudvar (Eastern Railway Station), take M3 to Deák Ferenc tér and change for M2 and get off directly at this station. Underground tickets can be bought at the Kőbánya-Kispest Exchange. If you need to change the line, buy a transfer ticket ("átszállójegy").

4. From the railway station to the venue of conference
The conference venue is located at DAB Székház (Thomas Mann utca 49, Debrecen, Hungary, H-4032). For pictures of this building, click here. The best is to take bus 31 to DAB. The bus stop is right outside the building of the railway station. The journey is 19 minutes, and you have to get off at "DAB Székház" (11th stop), which is right in front of the venue.