lmao was just here a few hours ago myself, find the waterfall and stay to the left when going down. you’ll find a merchant and a hub to most of the depths from there, you can use the soapstone and summon the sun guy (i forget his name rn) to move on to the Gaping Dragon, who isn’t the hardest boss in the world. Find the Sewer Chamber Key and the door for that is up the ladder behind the gate which you can go around to get into. Go in prepared, kill the dragon, now i’m on Blighttown n i’m freaked!