Student or Learner
1. "I'll do the rest." ( is "rest" correct?) like in :I'll do the rest of it.
2. "If you'd only listen to me, we could've .....( is "listen" the correct verb tense" cause i think if it was "you had" then the verb would be "listened" but if it was "you would" then the verb would be "listen" )
If you'd [would] only listen to me, we could make millions.
If you'd [had] only listened to me, we could've made millions.
(Given the fact that the dental consonant /d/ is followed by another dental, /t/ in the second one, it may, in practice, be next to imperceptible; but it should be there.)