Q: What about a feature request: songs' queue?
A: It won't be implemented. At least not in ncmpcpp itself. It's mpd which should handle queueing as implementation of songs' queue in a client would be just set of dirty hacks. If mpd gets queueing function, ncmpcpp will get it too. There is no other option.
Q: Why I can't use tag editor? I get only "Cannot read file!" message.
A: You have to set proper path to your mpd music dir in configuration file.
Q: I can't find any configuration file! Where is it?
A: It got installed in YOUR_CONFIGURE_PREFIX/share/doc/ncmpcpp (usually /usr/share/doc/ncmpcpp or /usr/local/share/doc/ncmpcpp)
Q: How can I change colors? I don't like the defaults.
A: Everything is described in example configuration file. Just read it.
Q: Ncmpcpp crashed! How can I help with fixing this problem?
A: Ok, the first thing you need to do is to get meaningful backtrace. If you don't know, what backtrace is, don't worry, you just need to perform below steps:
gdb ncmpcpprunbt