The language editor is only needed if you want to create a new language (file) for Ahnenblatt. For the work with your families you won't need it.
After installation of Ahnenblatt you can import an Gedcom (*.ged) file or you start with a new (empty) file where you have to create a new person and then create others by clicking the links (like "father" or "child") and filling in the informations you have.
I don't know aldfaer, so I can't recommend a way of exporting/saving a Gedcom file there. But if you are able to create one there, I would
- Save a copy!
- Save another copy and import that one in Ahnenblatt ("File" - "Open ..." - "GEDCOM file").
- Save that file as an Ahnenblatt-File ("File" - "Save as ..." - "Ahnenblatt file") - working with them is much quicker and if you need another Gedcom file, you can save it any time as a Gedcom and get right back and work with the Ahnenblatt file.
- Start editing your family or print some trees. Dont' worry to much, just try it - it's easy to use. Just in case, save a copy from time to time. Additionally you can set an option that Ahnenblatt will save some backup files ("Tools" - "Options ..." - "Folders" -- I'va entered "999" and "10" here).
If you're working with a Gedcom file in aldfaer you are able to open it in Ahnenblatt. BUT I would never work with to different programs with the same file. So I strongly recommend to save a copy (can't point out this often enough) and work with different files as mentioned above.
Have fun and just try it, you'll get an idea how to work with Ahnenblatt real quick.
Marcus