true but keep in mind when I trade a Gold ETF, Stocks or an Oil ETF I never see or hold any of it in a physical form either. I can buy and sell the same day transfer the funds to my bank account run to the grocery store swipe my debit card and eat supper that night never touching money.  All digital transactions represented by the US dollar.

I have a wallet now but still not sure the best way to say buy my first bitcoin,  Localbitcoin? Blockchain?  I just would hate to spend $940 USD then get $870 in bitcoin after fees. Its complicated to me lol.  But I love it

I did buy a graded Casascius coin loaded and love it. I wont be using that bit currency 

Bitcoin seems to be no different from stocks, oil and gold where supply and demand dictate price

ah there's my answer a private key for transfers

this is going to be a dumb question but I am new to this, when my address is funded and can be seen by public is that always unique to my wallet ? what keeps someone from getting funds from the address such as a previous owner of a Casascius coin.

thanks for any help

There is supposed to be a Bitcoin ETF started in 2017 I am kind off excited about that. I think that Bitcoin itself is also the investment like someone posted earlier