Whoa! A lot of information thrown my way which is not at all a bad thing but just little overwhelming for a person new to Bitcoin use entirely altogether. What I don't understand is what's the difference between buying a Ledger Nano S for a cold storage wallet which I understand it is that you buy it then get a cheap or old computer or some to store your Bitcoins on an Electrum Wallet on an offline no internet connected computer so you can simply withdraw what ever amount you want to spend.
Then you just simply use your Ledger Nano S which you say put only a small amount of the Bitcoin you keep on your offline Computer Electrum Desktop Wallet and use it to make a purchase since like it's been stated it's still vulnerable when you connect it to make the purchase/transfer the funds.
Now my question sorry if this is a silly new Bitcoin user repeatedly asked question but what's the difference between simply using any U.S.B Drive like my WD Passport 2TB Hard Drive has a Password I use and is required unlock it. How is the Ledger Nano S U.S.B. Storage Wallets different from simply putting an Electrum Wallet on my WD Passport Hard Drive I assume there is a very good answer to why you can't just simply do this or I assume nobody would bother buying these wallets and when I mean I don't have enough Bitcoins worth stealing what I mean by that is simply it won't be that big of a deal or loss of money for the amount that I keep stored which is only when I buy Bitcoin and spend it and have extra Bitcoin which at the moment my case right now is I did not even use the Bitcoin after I purchased it so I plan to just save it for when something I want comes along that I want to buy and or the Bitcoin value goes up possibly.
My Cell Phone uses Android but I don't have a Data plan and I can simply disconnect my Cell Phone from my Wi-Fi Internet Connection from my House and would that make it into a cold walletish? Oh and I use NordVPN for the use of hiding my Torrent P2P activity from my internet service provider should I be closing my NordVPN when I use my Wallet as anyone who knows anything about VPNs then you would know they are shady as shady gets lol even the best of them I only use it because my brother purchased it for bypassing Netflix Location so he is letting me share his account for free.
If anyone has a good link or youtube video to help me get started on a Electrum Wallet and to make sure I set it up right on my Windows 7 Home Premium 65-Bit (6.1 Build 7601) is what it says my Computers Operating System is.
Technically "cold" strictly means unpowered thing, such as a piece of paper or a disconnected hard drive or a usb thumb drive.
If you have a fortune you are moving from your bank into a Bitcoin wallet, you should indeed make such a cold wallet. A good method involves generating a wallet with Electrum, it will ask you to write down 12 words, those words are your actual wallet (technically your private key is derived from), but you also need to copy/print your public addresses otherwise you won't know where to send the funds.
Once you have made a wallet in this way, that is, written the 12 words by hand somewhere, and copied/printed your public addresses, you are already finished, delete that from your computer (format etc, or even better would be to create it entirely with a live linux iso as windows is seriously insecure).
I don't know if you are catching it, but your wallet doesn't store any money, just the keys to be able to move it. It truly is stored on "the cloud" which is the famous decentralized worldwide peer to peer encrypt protected database known as "blockchain".
What, with those 12 words you can recreate your wallet again anywhere and be able to move your funds, but you are normally not doing that, since its to store a large sum all you need to do is keep sending bitcoin to the public addresses you copied/printed before, and you can even verify those transactions online using a blockchain explorer, without opening the wallet which is the risky part.
If i were to make a guide, i would:
Instruct you to download a linux iso image, put it into an usb and make you boot your computer with that.
Then tell you to install Electrum, and proceed creating a new wallet. At this point comes the most critical step: writting with your hands in a piece of paper the 12 words, those are what you must protect the most, in fact you should make another physical copy (again with your hands, no cameras, no copy/paste, no printing) and make sure you store those papers in secure separate physical places.
Of course at that point you need your public addresses, so you can take the chance to copy/print/photo, whatever, those addresses are where you (and others) will send you Bitcoins.
And now comes the best part, you turn off the computer. Boom, everything is gone. That's the beauty of a a linux live iso, no installing, no saving.
At some point you will want to move your funds out or send them to another wallet, perhaps in the future when Bitcoin has gained more value against fiat currency. At that moment, you repeat the same process:
Boot a
linux iso, install
Electrum, but instead of creating you will restore a wallet with the 12 words (see why they are so important yet?). Then move your funds, and turn off the pc. Transaction done.
All this time you "wallet" has been in those pieces of paper with words written by your own hands. Those inconspicuously looking papers with words are the true jewels of the crown.
If you purchased a hardware wallet then you skip the using a pc to create a wallet part and use the device directly, hoping you back up your private keys or seed words anyway because you never know when you might lose your device...
Now you could have a "hot" wallet with small amounts for "mundane" purchases, that could be your hardware wallet, and android device or even a PC, but please try to stay away from windows, if only for the "serious money handling part". Linux can be booted from a live iso without installing, or you could install it alongside if you want. Some people run it inside windows using a virtual machine but that isn't exactly safe or efficient.
Also beware of phishing, there are several wrongdoers providing "fake" wallet software attempting to lure users to download their trojans, always triple check you are getting your wallet software from the official site, and do the pertinent verification. There are threads on this forum explaining how to do that, its especially bad in windows where users are used to go to random web pages to then click download and install. Bad habits are hard to break, and those are easy prey for the thieves...