Learn to value coins in BTC. Ether aside, Bitcoin is the current primary currency of the crypto economy (i.e., its what you have to use to buy most altcoins). Those new to crypto tend to value things in dollars. Meanwhile, even seasoned cash traders value coins in dollars. However, enough crypto traders will value coins in BTC for it to matter. If you aren’t aware of the BTC charts, you won’t be able to properly understand the trends everyone else is analyzing and reacting to. You don’t have to make getting more BTC your goal, but you must have the BTC prices of altcoins on your radar. There are times when all coins move up, but altcoins steadily lose value against Bitcoin. Those who know will be the first to dump altcoins for Bitcoin; this will set off a vicious cycle that can result in the stagnation of altcoin prices.
Coinbase/GDAX will want more personal information than you’ll feel comfortable giving them; there is no way around this. The more information you give them, ID, Bank account, credit card, etc., the higher your limit and the less restricted your account will be. Don’t let this scare you off from becoming a cryptocurrency investor. Every other exchange user went through this process; you have to also. Since you have to trust someone, Coinbase/GDAX is a good bet.
The term “day trading” suggests manically executing on trades every few minutes. But, as many of these mistakes show, day trading success doesn’t necessarily come for finding a new potential trade every second: you might find more success simply by taking your time, finding opportunities you’re fairly confident in, and executing a couple of trades every day or two.
Don’t be greedy. No one ever lost money taking a profit. As a coin begins to grow, the greed inside us grows along with it. If a coin increases by 30%, why not consider taking profit? Even if goals are set to 40% or 50%, you should at least pull out some of the profit on the way up in case a coin doesn’t reach the goal. If you wait too long or try to get out at a higher point, you risk losing profit you already earned or even turning that profit into a loss. Get into the habit of taking profits and scouting for re-entry if you want to continue reaping potential profits.