Yes. You can still invest in Bitcoin. However, its market price is highly volatile.
A notable one is its scarcity. It has a fixed maximum supply of 21 million tokens that will ever be in circulation. Over time, the primary incentive will be ownership and sales.
No. There is still some time before the world can mine the whole Bitcoin supply. However, the earlier you take action, the better.
As of now, speculations about Bitcoin as an asset persists. Hence, there is a constant fluctuation in pricing based on perception at a given time. So, as a new Bitcoin investor, get familiar with the price fluctuations.
Bitcoin poses a high risk. However, the increased risk can be associated with high rewards. As traders often say, the money is in volatility.