EASY
Smart phone or Tablet + Headphones or Headset.
I suggest to buy at Grosso Shop
Asus
Huawei
Music Instrument at Thomann.de UK section
MEDIUM
mic
headphones or headset
HARD
mic stand
USB audio interface
mic with anti pop filter, shock mount and cable
headphones
STUDIO
studio monitors x2 pack
cables x4
Any questions? text me,