Hi and welcome..
Beginning traders should start here and work through all of these videos:
https://www.altcoinstalks.com/index.php?topic=31706.0Some rules that I think especially will help noobs are as follows:
1) The only part of a trade you have complete control over is when you hit buy, so this is literally the most important part of any trade.. you can't just buy at any price and have faith over time that it will be okay, because it won't be. You need to be greedy with your entry into alts from bitcoin (bitcoin is the hedge to losses in altcoins, so only enter altcoins ar absolute prime opportunities).
2) Don't over trade.. don't concentrate on every little % point or sats, noobs tend to overtrade so slow it down.. Any profit on a trade is great, but don't be trying to play every 5 or 15 min candle, you will get rekt.
3) Trade in satoshi value not USD... trading in USD can give you a false sense of security in bull markets... basically everyone goes up in USD value but did your altcoins trades outdo the amount bitcoin rose is the question, and USD ignores this conversion.
4) Don't go 100% in altcoins, always have bitcoin to cost correct mistakes.. I usually always have 50% bitcoin and if i go lower than that as a % I take profits quicker to put it back in line.
5) Take profits earlier and don't trade all in or all out.. use some sort of laddering method where you're never all in or all out, playing both sides of the chart is more fun and less emotional... also don't hold to some perceived year or time in the future as when you will get rich.. This is stupid and a common mistake by noobies.. there are no guarantees in life and thinking you are just gonna hold some altcoin til 2030 and cash out is incredibly silly. Just take profits where you can, hoping that you get rich because of some wishing well mechanic isn't a strategy.
Hope these help, even if they're a little harsh, these are the most common mistakes I see in new traders.. pair these with the videos from our pinned post and then come back and ask more questions to expand on more in-depth topics.
Questions are always welcome.