2. Don't Buy at the Peak, Buy during a crash like now, so you can Sell at the Peak like $70,000.
as a beginner don't start with trading and know this that it take risk to invest, no one can guarantee you a certain return rate, bitcoin may run bull or dip, that is if you don't invest on shitcoins
3. Don't borrow money to invest in crypto, it's volatile you could lose everything and your creditors will throw you to jail.
if i were you, the first advise I would give is not to invest on altcoins for a start.
4. Don't invest your survival money. Some bearish markets take years and if you can't pay your bills and feeding, you can't be patient enough to wait for a bear market.
only invest with savings from your earnings.
5. Belong to a Community. Crypto works better if you belong to a Community where you are updated, especially on What to Buy, When to Buy and how much to Sell.
this aspect is very risky for a beginner to decern which but I will only recommend bitcointalk.org as the only institutional forum created by the inventor of bitcoin itself, Satoshi Nakamoto, here you learn from every aspect of cryptocurrency and specifically bitcoin.