Buying low and selling high have become mainstream in the world of Bitcoin trading. Hence, I think you would have to listen to your gut feeling as it will lead you to places only you can explain. It is, perhaps, like relying on yourself for no valid reasons because why not?

Once you have Bitcoins, you can invest by just holding your money. Time the length of stay of your money to Bitcoins and see how much you gain or loss for a specific quarter, then make a data out of it. You will notice later your data become thicker, and are very reliable because you made it yourself. Study the trends and the circumstances surrounding the increase and decrease. Always study your cause. This move is for people who considers growing long term investments with Bitcoins.