Remember the second conditional is used to talk about ‘unreal’ or impossible things. It’s not important which clause comes first.
Example: If I had more time, I would go to the gym. (but I have no time) If you did more exercise, you would feel better. (but I don't do more exercise) I would call Mary if I had her phone number. (but I don't have it) Remember you need to use a comma when you start the sentence with the if-clause. If you use the verb to be in the past simple, we use 'were' not 'was' no matter which subject you have. If I were you, I would try harder.
EFLNET is a website which contains free resources for students of English. Something which might be interesting for you is the Picture dictionary. It contains lots of vocabulary organised by topic. If you click on the pictures, you will hear the pronunciation of the words.