my question is actually quite common for sure
for beginners (like me), may spend years finding the solution, but for masters, it may be just seconds. however, the key thing is if those "masters" would like to share knowledges. although there is a tendency that the sharing spirit is now basically dead in the reverse community, there are still some good masters like Sendersu, zeuscane, and zementmischer( sorry your name is difficult to print), who are really helpful to help newbies and share reversing knowledges.