For me i do mind keeping a few BTC worth on exchanges like Poloniex & Bittreix , i have been using them for over a year without any issues, my bigger holdings are on a hard drive and this device https://www.ledgerwallet.com/products/ledger-nano-s Have a read of this link 24869874 & this link 26467305 Both should have enough info on wallet set up , if you have you have more questions, feel free to ask.
