Follow directions to the Leipzig Hauptbahnhof. This is the center of transport for the city. The web page for your place of accommodation will provide directions from the Leipzig Hauptbahnhof.
See information on the main conference site under the heading ">> Map".
By plane you can use the Airport "Halle-Leipzig" train. The train station is directly below the airport, and trains leave often, arriving within about 15 minutes at the Leipzig Hauptbahnhof. You will also find taxis at the airport.
By car, you can reach Leipzig by one of the three highways - A9, A14 or A38. Follow the exits toward the "Zentrum" (Center) or Haupbahnhof (Central Station). The B6 and B87 also lead directly to the Central Station.
From the Leipzig Hauptbahnhof (Central Station) you can travel by public transport to your final destination.