1. make sure u do an intensive research,
2. never stop believing in urself and when things go wrong, u will learn a big lesson and be happy u did your best than following a footstep u know nothing about,
Good luck
And I would add something else:
If you think that the bottom of the market has already come, take a closer look - it can be fake.
If you are determined to hold the coin, do it to the end, and do not even think to sell before.
Don't believe in bitcoin at 20,000 by the end of this year. Thoughts in cold blood.