When you first post a thread at the bottom of your post "box" underneath the attach files portion there is a small box labeled "watch this thread". If you check that box you should get notifications in your profile of replies.
Under that box is another box labeled "and receive email notifications". If you check that box you should get emails every time someone posts.
If you don't check those when you post you won't receive notifications.
I don't know if you can go back and check them afterwards or not.
As far as your starter.
Starter has 2 parts. Big "barrel" is the starter motor itself. This is what actually spins the engine.
Small "barrel" is the starter solenoid. It's a switch that allows power to flow to the starter motor.
Normally battery power is waiting at the starter. When you turn the key, power flows through the small wire and closes the solenoid, which allows battery power to flow through the large wire to the starter motor itself.
it sounds like the solenoid is stuck closed, so power is always allowed to flow to the starter, not just when the key is turned on.
Or, less likely, the contact at the key is stuck closed, closing the solenoid, ect.
Tapping it with a hammer (not too hard) may loosen it.
It may also need to be taken apart and cleaned/rebuilt.
Looking at the condition of everything else it may not hurt to take it apart and clean it.