For me, current situation on cryptocurrencies is like during 2014/2015 period with Bitcoin. Huge downtrend (to $240), people panicking and then it started climbing back (to $1200 on January 2017). So then my personal opinion is - buy as much BTC (or any other MAJOR crypto) as possible seeing current lows, and wait patiently.
Remember, if you invested $1 000 in BTC in Jan 2015 and sold it on Dec 2017 peak, your profits would have been approximately $75 000. So then simply go to cryptocurrency exchange and buy. I personally recommend linkkoin, as it is very fast and they have low fees.