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?
Nope, you don't need to have a good GPU for trading. In trading, Specifications of the laptop or desktop is irrelevant. You could use a Core2duo w/ a low Video card to access a trading platform it would be slow but still accessible. And Yes you are right that they are different. Buying PC is I think not advisable if you are engaging in trading. Since you need to monitor your money from time to time and you can't carry your PC every time you go out.
Which is the easiest?
Trading, Why? In trading, you only need a minimal amount of capital to start. But a high percentage of return of only you have enough knowledge and information in you. Unlike in mining you need to invest for good mining rig which can cost you thousands of dollars to have at least a good one and In mining, the return that you could get would only be consumed by your electricity bill.