- Why is Bitcoin called digital gold?
Bitcoin is called digital gold because it has characteristics similar to gold. This is because its supply is limited (only 21 million coins will be available), making it similar in scarcity to gold. Bitcoin can also be used as a store of value, similar to gold which is often used as a safe-haven. Bitcoin is also completely untouched by the government's monetary policy of "inflation", this character is similar to gold which cannot be affected by monetary policy. Bitcoin runs on its own "decentralized" without any party being able to control it, gold is also like that, it cannot be controlled by a single entity.
- Does Bitcoin automatically go up and down or is it managed
by any company or person?
You've already answered it here.
As far as I have learned, it is not controlled by any government or person. It is a decentralized coin. People call it digital gold. It allows people to directly transact with each other.
- If I buy Bitcoin, will it be more profitable to hold it for a long
time or for a short time?
Depending on your investment plan, it is generally more profitable in the long run.
- As a beginner, what should I do here? Should I slowly start
learning from here or should I try to invest along with learning?
I will use the term "kill two birds with one stone", you can start investing while learning as long as you already know the basics of how to buy and store it safely.