lol.... Congrats that you got the best keyboard of Noppoo EC Switch-based keyboards
Here're the function keys that you asked
FN + F1 : Open My Computer via Microsoft Explorer
FN + F2 : Open Internet Browser
FN + F3 : Open Calculator
FN + F4 : Open Favorites(Same as bookmarks)
FN + F5 : Open E-mail(Maybe Outlook, but it works with mail on windows 10)
FN + F6 : Open Search
FN + F7 : Go to Hibernation Mode(Sleep Mode)
FN + F8 : Swap the position between Caps Lock/Left Control
FN + F12 : 6-Key/N-Key Rollover Setting
FN + ESC : Key Lock
FN + Q : Mute
FN + W : Decrease Volume
FN + E : Increase Volume
FN + A : Pause/Play
FN + S : Play the previous track
FN + D : Play the next track
FN + F : Stop
FN + Pause : User Mode - I don't know what it is
And here's tip for using your new board....
First of all, because the board is based on Noppoo EC Switch, it doesn't support fully RGB.
It means that the color of light will not be matched as your thoughts.
But you can change the color of light per key via software which is provided by manufacturer.
And second, It has the possibility to break the stem of your keycaps because of the thick stem of old switches.
You should use the cheap keycaps for protecting your money or replace the switches with retooled stem for protecting your expensive keycaps.