Now is a good time to invest. Prices are very low. It is possible that they will still fall, but in my opinion slightly.
It is worth buying strong projects for a long time. Such as DASH.
For a long term investment, do not forget to make a profit on price hill. Strategy of perpetually holding it all the time is not sensible.
You should buy and sell when market is favorable.
Tradind daily is a bad idea if you have no experience.