In my own opinion if you're a beginner in trading you must choose hold because you don't have knowledge to trade bitcoin. If you're a expert in trading you must choose to trade everyday so you can earn profit everyday but be careful in trading trading is so risky.
Only invest the money which you have extra in starting as you are a newbie so losing in trading is higher and possible that after your purchase markets may fall and thus you may have to hold it for months if the market do not recover in that time frame.