0-1-2-3 Conditionals

ITTT (If this then that)

0(Zero) Conditional - general statements
When/If (pres simple) you're a teenager, you (pres simple) don't have enough money.
When/If you need information, you ask for it.
If you're ill, you go to the doctor.

1st (First) Conditional - possibility in present / near future
When/If (pres simple) I'm a teenager, I (simple fuuture-will) won't have enough money.
When/If you need information, you will ask for it.
If I you're ill, you'll go to the doctor. 

2nd (Second) - improbable present/future
If I (past simple)was a teenager, I (modal: would/could/might+verb) wouldn't have enough money.
If you needed information, you'd (would/could) ask for it.
If you were ill, you'd go to the doctor.

3rd (Third) Impossible condition for the past
If I (past perf) had been a teenager, I (would+pres perf ) wouldn't have had enough money.
If I had needed information, I would have asked.
If you had been ill, you'd have gone to the doctor.

WHAT WOULD  YOU DO? /practice/
If I needed help with my studies...
...I would ask for it.
Things in my country would have been different if I would have become the president.
1stIf a friend finds a diamond ring and keeps it, I'll report him/it to the police.
2nd If a friend found a diamond ring and kept it,
I would report it to the police.
3rd If a friend had found a diamond ring and had kept it, I would have reported it to the police.
(3rd)I would have travelled more in my past if I had been richer.
(2nd) If I could invent/invented something new, I would win a Nobel prize. 
(1st) If my manager gives me a promotion, I'll be happy.
(2nd) If my manager gave me a  promotion, I would be happy.
(3rd) If my manager had given me a promotion,
I would have been happy.
(3rd) If I hadn't come to class today, I wouldn't have learned this.
(2nd) If I didn't come to class tomorrow, I wouldn't know the 2nd conditional.
(2nd)If I spoke perfect English, I would work in an English speaking country.
(1st) If I speak perfect English, I'll work in an English speaking country.
(2nd) If my neighbour dented another person's car, I wouldn't tell that person.
(3rd) If my neighbour had dented another another person's car, I wouldn't have told that person.
(1st) I might move to another country if I want to start a family.
(2nd) I might move to another country if I wanted to start a family. 
(2nd) I think I'd be very happy if I got married./ If I got married, I'd be very happy.