HELP needed please... I have been trying to learn about off line Wallets

Hi all, I have a question if someone has the time to help please :)

6 weeks ago I discovered Steemit and cryptocurrency.
In that time, this week actually, I learnt how to buy my first crypto! Yay..go me, hehe

From Steemit I have learnt I need to keep my currency OFF the exchange.

BUT....How do I actually do this?...

I have come across : Hard Wallets, Bread Wallets, Paper Wallets, Cold Storage Wallets...aarrgghhh...What to use...and how do you get it off line?

Also, do you have to put it back on the exchange to buy more? Or can you buy more and just add it to the off line wallet?

I read by someone here, "If you don't control the private keys, you don't control the currency.". Need to learn this too :)

I have only been practicing with a tiny bit, but just in case I actually may make something, I need to learn what to do with it lol..

So, basically..Any recomendations of an Offline wallet will be greatfully appreciated., and how to use it..

Many thanks, cheers all, Dardi :)