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Lol..I'm a chick from country NSW, Australia. I don't exactly have a lot of crypto friends to help guide the way :)
I have only been playing with $50, bought a little Steem ;) and another..I figured people bet more on a horse :)

That's smart not to invest too much which exchanger are you using I heard coinbase is the best. If you're confused about wallets just check the oldest one the longer it's been in business the more legit it is. About public key is like your email address that's what you send to people to send you money, private key is your password no one should know it . Off line wallet try to use bitaddress.org I heard a lot about it

Thankyou so much..I truely appreciate your help! I realise it is a hi tech world I am so not up to speed with :) but learning, fast!
I have used both Coinbase and Coinjar (for Aussies) and bought on Bittrex. Which I learnt how to do here..But is where I still have it, so next step Wallets and better security :)
Once I learn that, I will fell more secure with investing a bit more, even though it is all a gamble really :)
Cheers for the help mate :)