Dear all,
Newbie in the Bitcoin world, and cannot understand how the Bitcoin wallets work, hope this is the correct place to post..

After I had bought some Bitcoin, I figured out that I needed a wallet, so I have created one.
And then the mystery starts, is it possible to transfer Bitcoin to the wallet after they are bought, and in case, how is this done? (have a Bread wallet)
And please, (I know it's a lot to ask for) explain in detail for dummies 

I have bought Bitcoins at Gdax (Coinbase) and Cex.io.

Thanks in advance