...もらおう => Please... N4
Benefit
もらう => Received N4
Give and take advice
てもらう => Do for N4
Give and take advice
てもらう => Could you... (for help) N4
Benefit
どうも ... そうだ/ ようだ/ らしい => It seems, probably N3
Speculation
~てからというもの      => ever since ~ N1
てもらう => to get somebody to do something N5
させてもらう => Allow me to do (favor) N4
Allow
というのも…からだ => This is because… N2
Cause, reason
てもらう => to get somebody to do something; request a ... N4
Benefit
もう => more N4
Add
(か)とおもうと / (か)とおもったら => just when; no sooner than ~ N2
Simultaneously