if you are first timer i recommend you to invest and invest what you can afford to loose, because bitcoin is very volatile. This is also a great opportunity for you to earn because right now bitcoin is on its dips, i would suggest you to invest also on ethereum, you will get a lot of profit when the value of bitcoin get back on its peak, bitcoin may also be equal also to gold and that's what everyone want's to be, but bitcoin will have its ups and downs before it may happen.