My experience is focused on one or two altcoins. Use TA to analyze their graphs, notice on buy volume weekly and supporting buy zone and read new information as soon as possible.
We had our own way to grow our portfolio, and to make that happen Trading is the main tools for us to increase our altcoins.
One more thing TA is easy to say but difficult to apply in the actual trade. Because of the feelings to have a quick profit, most of the
traders are relying to their luck instead of skills, that's the problems. Though, it is true crypto trading will always resulted to have a new coins into our wallet in the every platform.