The altcoin season doesn't seem to have started yet, altcoin is moving very slowly because they are waiting for the bitcoin season. Maybe after that new altcoin can move up. So I have not planned to buy some altcoin because at the moment altcoin hasn't been able to give me much profit. I expect Bitcoin to fly first now.
We may have to wait a little longer because the value of Bitcoin is currently unstable and the high volatility of the market is the main reason affecting so many other altcoins. I think the altcoin season is unlikely to happen this year and we may have to wait a long time because the current trend is focusing heavily on Bitcoin. I personally still hope that the altcoin season could happen sooner but now can't do anything but be patient because things often happen unexpectedly in this market.
Things happened surprisingly most of the time. We can't accurately predict the market, all we can do is to continue chasing and speculate the next good run. Optimistic investors are always willing to wait and patiently trade little by little. Some might do little scalps and try to accomplished decent profits while others are into long and keep buying those cheap coins that they've spotted around the market.
Whatever trading style you have, it's best to stay calm and patiently observe every market movements. From that point you'll be able to get some hints on when the strong bull will hit the market.