Mixing desks come in Analogue and Digital varieties. Some have built in audio interfaces. Desks combine and route audio signals and mostly contain built-in microphone preamps.
Bags covers and cases for the storage and safe transportation of your equipment.A good case can sometimes save the life of your instrument, and even just a dust cover can protect it when it's not in use...
Condenser (or Capacitor) microphones are fantastic for detailed recording work. When using them for vocal recording, think about if you need a pop filter (to stop plosives) or a reflection shield to minimise room noise on recordings and produce a clearer result.
All condenser microphones need a power supply from somewhere, either battery or 48V Phantom Power from a desk or interface.