Lots of long time Bitcoin fans and investors recommend Dollar Cost Averaging (DCA) into Bitcoin.
To DCA means to purchase a fixed amount of Bitcoin on a regular schedule, imagine automatically buying $10/week OR $100/month in BTC. This way you are always buying and are less affected by short term price decreases.
How to DCA into Bitcoin
The easiest way to DCA into Bitcoin is by using a company that handles the automatic buying for you. Check out the Bitcoin DCA apps below.
Otherwise, you can create a schedule for yourself and buy bitcoin with your favorite exchange.