Good Mic & Soundcard does not complete the recipe...
Hey there Konsandy,
Realistically, I think a working setup is enough to begin with the recording endeavour that many people have. I'm sure you've attempted simple tape recording or maybe built-in pc mic recordings to hard disk that many of us started experimenting with and is ready to do the next leap.
Simple hardwares like Zoom H4 or Micro BR (handheld recorder / multitracker) would be a good start before you dive deeper. Most often I'd categorise these 'micro studios' as priceless idea-capture tools capable of giving decent mono/stereo recordings. If you record the tracks well with them you can import this very recordings into any pro studios for further work on it. It'll be good to record with a metronome or click track so that'll be easier to maybe lay drum tracks/loops or further accompaniment that might strike well on the growing idea. Keep it to .wav files or .aiff 16bit/44.1KHz at minimum so that further processing can be done if required. Mp3 recordings, though possible, is only good if you want to capture quick audio ideas for further improvisations and personal use. To eMail (small file) to possible drummer maybe?
Without much knowledge, getting into the digital studio, diving into soundcards, mic choices etc would most often (Panadol!) stall the great music idea that you might already have. Instead of capturing that idea you have, you might end up trying to fix a non working soundcard, pc crash, unbalanced signal, etc.. (more Panadols!)
Keep it simple. And keep it real. You'd be surprised on how much you can learn using the simple mobile studios. Its a stepping stone to getting a better sound, into recording techniques, and not break the most invaluable musical idea that you want to (from the start) capture.
Good luck and enjoy!
FYI Zoom H4 comes with built-in stereo condenser mic capable of using 2 external mics/intrument with built-in phantom power. BOSS Micro BR has only one mic (mono) built in but you can also use external stereo mic with the balanced mini jacks. It also has an instrument jack on board.