Don't panic & buy fixed fiat amount worth of BTC in fixed periods. This should be your main plan - it shields you from volatility and it allows you also to get into good security practices before you accumulate a big sum. You can direct it into BTC, too - but be sure you don't spend anything that you can't afford to lose. BTC can go to $200-$300 overnight, your backups can be destroyed in fire or your computer could be hacked and your BTCs could be stolen.