How do you select what you invest your precious satoshi's in?
Free signals? Paid signals? Own TA? Depth charts? Pure luck? Acting on regular volatility?
Personally, my tipple of choice is depth charts. Would be happy to debate the relative merits and hear how other people make it work for them.
How do you protect against dumps (Bart!)? How do you pick the coins you want to analyse? Are you successful?
The simplest method is riding the trend
Yes, that's why the best "strategy" is to buy the dip because Bitcoin's long term trend is up.
I can't think of anything simpler that wouldn't be pure luck.
No, pure luck is putting some Bitcoins in a slot machine and pulling the lever. But I agree that there might be
some luck needed.
Bitcoin as well as other cryptocurrencies has been in a downtrend since the beginning of the year, and if you followed the trend (not forgetting to put stop-losses along the way), you would have earned handsome profits. And it doesn't really matter where the trend goes. If it goes south, you sell coins (probably on margin), if it goes north, you buy them. In between you can go for day trading by exploiting daily or weekly volatility (within your stop-losses range)
Another strategy is to zoom out then buy and hodl.

