How to use tif/twf files in OSM

hello

I have to create for university a map for a village in OSM. I got tif/twf files, cif files and a dwg file. What is the best way to start, to import and to edit ?

when you are able to read and write in German language maybe you will get an answer in the high traffic German sub forum here a bit sooner …

or ask at http://help.openstreetmap.org