Firstly I read how to create an offline (or several) wallets using bitcoin core available on their website (bitcoin.org) which is by far the easiest IMO but.. it requires too much data download and same with Armory so Electrum is the only choice I have left.
But what I would just like to understand is.. IS THIS POSSIBLE... >
I download Electrum, transfer it to a usb, take it to an offline (and by offline I mean the computer which has never and will never be online) computer install it there, create several offline wallets with passwords, save their info ( seed and all..) and then store it their and on other offline usb and print it on paper etc.
So let's say I make 10 wallets, I take an address of one of those wallets, send all of my BTC to that address and that's it, since it has never been online, it's safe (according to the guides I read)
And when I need to send some BTC to someone, I install electrum online, restore the wallet (the wallet to which I sended BTC earlier) with the seed and password and it should show the Bitcoins in my account? right?
And say for example I have like 10 BTC, and I need to send someone 3, I send the 3 to that person and send the rest of them, which is 7 to my other offline wallet address?? and it will be safe?
Is this doable? or I am I making a huge mistake??
Your assumption is correct.