Looking for Minimalist Android Apps, Widgets, Icon Packs, etc..

Hey so I just became an android user for the first time so Ill need help starting off with apps. I really despise ugly/glossy/Skeuomorphic apps so please pick nicely designed ones. I am just starting so any help would be nice and in addition, what is the best app to back up my android phone? What are some great android exclusive apps?Thanks in advance!

Edit 1: Oops, forgot to add that I have verizon htc one, so I almost positive I can't install stock 4.3 or Cm 10.2 or any other roms

Edit 2. Also, any apps to easily transfer over itunes content or can i upload that to google play music and then download it to my phone again?