I know I've touched on verb tables before, but here's a decent explanation of them.
Each verb has several forms used for who is doing the action.
I - Je
You - Tu
He - Il
She - Elle
We - Nous
You (plural) - Vouz
They - Ils/Elles
So, Different verbs have different rules. Some are irregular, but those are different.
As I've said a long time ago, there is a table for tuer.
So, depending on who is killing, you change the form of tuer.
It's a regular er verb, so it goes like this:
Je tue
Tu tues
Il/Elle tue
Nous tueons
Vouz tuez
Ils/Elles tuent
If you take off the 'tue' from each, that is the regular er verb ending.
Any questions?