BEFORE HAVING LEARNED
Rachel saw positive traits and great potential in Rebbi Akiva. But how can this be reconciled with Rebbi Akiva's own admission (Pesachim 49b) that when he was an Am ha'Aretz he wished he could physically attack the Chachamim!
What else do the sources tell us about Rebbi Akiva's virtues, even before he began to learn Torah?
MARRIAGE
Why did Kalba Savua react so harshly against his daughter?
RACHEL'S ENCOURAGEMENT
What is a deeper, allegorical meaning behind "straw" and "hair," in the account of Rebbi Akiva and Rachel?
What was the meaning of this particular item of jewelry?
What is the significance of a twelve-year period of learning?
What is the Halachic perspective about leaving one's wife and children for extended periods of time, in order to learn Torah? Is this advisable nowadays?
In both Sugyos, just as Rabbi Akiva is about to return home after twelve years, he overhears someone challenging Rachel's devotion to him. Can both accounts refer to the same person?
KALBA SAVUA'S VOW
How could Rabbi Akiva annul a vow that pertained to himself?
1. Yosef Da'as to Kesuvos 63:p1, ד"ה איזיל
Rebbi Akiva having become a Chacham seems to be an example of Nolad - a turn of events that was unforeseeable at the time of the vow - which cannot be used as grounds for Hataras Nedarim!
Why did Kalba Savua wait 24 years before annulling his vow? What caused him to regret his prior outlook towards his shepherd Akiva - only now?
1. Discussion for Nedarim 50:4, second response, 3:a and on

