If beginners ask someone, then the answers to these questions will be very heard, and they tend to practice it as a whole. different if he already know a few things, they usually ask because to analyze and criticize , about the actions of what they then take, hold or not.
yes because of the extraordinary knowledge, but we have never tried it, we still don't know because that experience really helps you in the future.
check the truth then try, don't be afraid to fail, because failure is the beginning of success.
To hold a hold, of course we see current market movements, allow or not hold hold.