My wife started bitcoin investment few months ago, she started buying bitcoin when the value was only $2700 and it's really amazing how the value double in just a matter of few months. She don't invest big amount it's like $100 capital but that's really a good value now, she hold bitcoin up to this moment, she is patient in waiting for the best time to sell the coins and harvest the profit. I think that's one of the best technique, it's being perseverance in your goal and never lose hope.