I'm not sure Bitcoin can reach 20k usd in 2018, my prediction is a price around 9k-10k by the end of this year....

First of all , i don't think the market is crashing, we are in a situation of bear market, and yes i would do recommend my family or friends to join in but not before doing their own researches. I won't chose for them in what coin or token they should invest in. 
In my opinion, it's a good time to invest in tokens or coins with big potential and low price...

La verdad de las cosas estos exchanges siempre son hackeados, y yo creo que ellos deben tener en consideracion es que si van a tener un monton de personas que compran cryptos lo primero que debe revisar las 24/7 es la seguridad de su sitio ya que por un mas minimo detalle en la seguridad del sitio los usuarios terminan perdiendo un monton de dinero

I think , it's definitely the good time to buy ETH. Ethereum is not only a currency but also a technology, it has its own blockchain, so a lot of potential for the future.....