Hi Akanbi,
Thats great. Well I’ve done most of my work in arduino and an industrial standard microcontroller called Renesas.
But I’ll try to help you as far as I can.
Learn about the SPI protocol first. Then learn how it is implemented in this particular controller. Which all registers are associated with it, what should be their values etc.
Then try to implement it in your code.
There should be doubts, and you just post it here.