In conditional sentences that are realistic, always use the present tense in the "if"part of the sentence and the future in the other part so:

If it makes you happier, I will give you the money or I will give you the money, if it makes you happier.

In unrealistic sentences: the past tense in the "if"part of the sentences and "would/could/might/should + verb in the other part so: If I were rich, I would buy a brand new car.(I would buy a brand new car, if I were rich)

In impossible situations(in the past, so no longer possible): Past perfect in the "if"part and could have/might have/would have + past particible in the other part: If I had known, I would have helped you. I would have helped you, if I had known. This way of explaining the conditional sentences has been helpful for my students.

In conditional sentences that are realistic, always use the present tense in the "if" part of the sentence and the future in the other part, so:

If it makes you happier, I will give you the money.

or

I will give you the money, if it makes you happier.

In unrealistic sentences, use the past tense in the "if" part of the sentence and would/could/might/should + verb in the other part, so:

If I were rich, I would buy a brand new car.

or

I would buy a brand new car, if I were rich.

In impossible situations  (in the past, so no longer possible), use past perfect in the "if" part and could have/might have/would have + past participle in the other part, so:

If I had known, I would have helped you.

or

I would have helped you, if I had known.

This way of explaining the conditional sentences has been helpful for my students.