Newbies who have not yet invested in bitcoin or have bought their first bitcoin, or people that want to continue with the increase in their bitcoin portfolio should put in consideration of using Dollar-Cost-Average(DCA) to increase their bitcoin portfolio, as this is the most convenient way to accumulate bitcoin gradually without worries of the price movement of bitcoin. DCA is means that you are to maybe 10% of your income to buy bitcoin either weekly or monthly, it is just like you save some part of your income regularly in order for you to use in to achieve a goal in the nearest future...
In any case, in order for the DCA strategy to bring you profit in the future, you must determine for yourself the price level at which you will start buying Bitcoin. If you start buying BTC at the maximum price, and each time you buy more coins when their price decreases, then your investment will not soon become profitable.