Besides Bitcoin, during the past week, we saw Etherum also dip seriously against the dollar, breaking previous supports and moving as low as 530; Is this just Etherum making a correction or should we expect more moves to the downside. HODL or Sell??

I think it's a downturn, before the crypto market begins to grow. As they say, this is a calm before the storm. We need to wait a bit and the market will grow again.