1) Identify the main trend, if it's a bearish or bullish one.
2) Trade accordingly, avoiding to trade against it. The trend is your friend.
3) Don't think the price is already very low and that it's time to buy. Prices can always go even lower.
4) Be careful guessing tops and bottoms. If you were wrong, jump out and assume the loss, instead of converting your move on a long-term one. If you insist in keeping them, avoid buying more to lower the median price, that is a recipe for disaster.
5) I know it goes against all the rules you learned on life (it's a violation of the rule of demand, that says that demand lowers when the price goes up), but don't think the price is too high to buy, unless it's clearly temporarily overbought or it was a fake breach of a resistance. If it's on a bullish trend, the probability that it will keep going up is higher than the opposite. So, many times, buying higher has more sense than buying lower. Ex. I have little doubt that if bitcoin breaches clearly the 1156 top on bitstamp it will keep going up.
6) The rule is not to buy low and sell high. Buying an active on a bearish trend, going lower and lower, is a disaster. If the active is in a bulish trend, the rule can even be buy high and sell higher.
The hard thing isn't to identify the rules, but to follow them!
I don't mean to be blunt and rude, but thank you for teaching the newbies how to lose.
Some of your advice is solid, but part of it helps good traders make a living off of people who actually believe "that stuff".
A) Fact: Most traders lose money long term
B) If you carefully follow all 6 steps quoted above, then you are well on your way to donating money to the winners.
You claim that buying while prices are falling is a "recipe for disaster" and tell people "many times, buying higher has more sense than buying lower"...that is beautiful. Keep up the great work.
ps. I admit having trouble catching huge moves, but I've done really well buying during Bear markets and trading my way into good % gains. (often even before the trend 'officially' reverses)
Edit: If "the rules" work for you, then that's great, hopefully others might benefit also.
There are many different styles of trading and some work well only under ideal market conditions.