It seems like altcoin is having a good pump lately, many of the shitcoin has started to gain 100%
That's good and bad both to be honest. For them who have invested a lot of money in 2018 ATH, it's good for them but for newbie, this shitcoin may be destructive to your crypto journey unless you become very smart while investing.
One term I would like you to introduce is- "Liquidity"
I don't want to go in details here since the goal is to make you alert about low liquidity.
Liquidity is simple term refers to liquid your crypto asset into fiat or it can be BTC too. Since, most of the times we trade with BTC, I will go with BTC here.
High liquidity- You can sell your coin anytime as much coin you want, the market has enough buyer to buy your coin.
Low liquidity- There are no enough buyer to buy your coin.
You can check this easily in exchange. Just visit the market for a coin and check the buy and sell orders and the amount. If there are low buy orders despite a high sell order, this means you can barely liquidate your coins there.
SO, when you are going to invest in a coin, check the liquidity of that coin for a certain period. Otherwise, don't invest. Also, before depositing big amount in exchanges, check if there has enough buyer at your desired price to buy your coin. Scam exchange can attract you by pumping a certain coin in their exchange and once someone deposits a big amount, they scam.
The altcoin market is more complex then you can ever think of. There are thousands of ways of scamming you which you can never imagine, even after being scam, you can't realize that it was a scam. Before invest, be smart enough to learn the tactics and save yourself.