Changing your avatar (Profile Picture)
Go to your account by clicking this button
Then scroll down until you find "Avatar"
And you can either upload an avatar from your files or paste a raw image link.
Then finally, scroll down and click "SAVE CHANGES".
Making a signature
Signatures are like a "sign-off" on all your posts.
For example, have a look at my signature at the moment.
Go to your account by clicking this button
Then scroll down until you find "Signature"
Here you can type anything you like which will appear underneath your posts.
You can even set images by pasting the raw image link.
"Raw image link" is when you right click an image then click "Open image in a new tab"
So the raw image link of that image is this:
Now you need to put this code (replacing the red text with the raw image link):
<img src="RAW_IMAGE_LINK" />
Into the "Signature" box, just like this:
Then finally, scroll down and click "SAVE CHANGES".
Changing your Password
Go to your account by clicking this button
Then scroll down to "Password" and enter the information required
Then finally, scroll down and click "SAVE CHANGES".