Hope this short guide saves you some time...
For those who found themselves in a loop like me, trying to figure out "How to transfer funds to their STEEM wallet"
The simple answer is that YOUR STEEMIT USERNAME IS YOUR STEEMIT WALLET ADDRESS when sending funds from exchanges to your Steemit account wallet, and you do not need to add a Memo.
Find screenshots below: (in this case, funds were sent from Binance to my Steemit Wallet)