Do I need a lot of GPU for trading like mining? And mining and trading is different right. So How will I learn buying a PC? because I only got my laptop here no desktop. Which is the easiest way to earn? Mine or trade?
Let me explain because it seems that you don't have an idea of trading and mining.
Mining is process of adding transactions on the public ledger of bitcoin (blockchain) after verifying it. This needs a proper setup of specific hardware and software, you can search it on by yourself too.
Trading is just is simple trading of currencies, buy cheap bitcoins or altcoins and sell them when the price is grown up. It doesn't need any special equipment (i.e hardware), your laptop or computer is enough for this.