First thing I did was install the aftermarket fans I bought, replacing the standard NZXT ones that came with (I wanted pretty white lights m’kay?). That went ok, although I encountered the first rookie error - not knowing precisely what the difference is between a 3-pin & 4-pin attachment re: fans. General gist of it is, that the 4-pin allows for “PWM” or pulse width modulation. You can plug a 4-pin into a 3-pin fan connector, it just means that the 4th pin - which controls how fast the fan spins - will not work, thus the fans will spin at 100% all the time. That is the basic version anyway. Ultimately, it boils down to whether the fan can be regulated by voltage adjustment, even if attached to a 3-pin connector (not all of them can - some motors do get damaged if under or over amped).
Second part I did was the CPU installation. Not going to lie, I was scared. I’ve heard numerous stories about people fucking up the installation of a CPU, ending up with a bricked MoBo & CPU, unable to get a replacement as user installation error isn’t covered under warranty. I treaded as carefully as I could.