How to buy Ordinals on OKX?

Could you please provide a step-by-step guide on how to purchase Ordinals on OKX? As a beginner in the cryptocurrency market, I'm looking for a clear understanding of the process. Could you start by explaining how to set up an account on OKX and ensure that it's properly funded? Then, could you walk me through the process of finding the Ordinals trading pair and placing a buy order? Additionally, are there any specific fees or commissions I should be aware of while trading on OKX? Your guidance would be greatly appreciated.