As we already know, Nov and Dec months are key months for bitcoin as we saw in 2017. Today (25th Nov, 2018) Bitcoin came to 3xxx for the first time in 2018. This makes BTC into new strong support level for upcoming weeks. Unless we see a new trend along new positive news, we will test another support level as we had $5800-6200 in previous months. By considering 200MA of weekly chart $3100 will be the next key level. Therefore we need watch RSI which near to 30+. If it's bounce from ~30, then we can buy BTC.