if you want to invest in bitcoin, don't look at the value just invest, don't be fooled by the market swigs, there are only two things to do with bitcoin now that is buying and holding
keep buying no matter what the price it, and hold the rest, if you want to make more bitcoin from the one that you are hold, invest them in some other things like altcoin that have a great potential or mining
actually i never bought a single bitcoin, i like to generate them via mining, it's more anonymous for me, and more profitable, even if it's slower
I agree with you mate, I also wanted to earn without spending even a single penny from my real money. All you have to do is put some hard work and generate it. Basically the most effective way i know how to invest from bitcoin is that buying it and hold.