What is the connection between Yeser, Moshe's father-in-law and Yisro?
Rashi: Yeser and Yisro are one and the same person. 1
Why did Moshe find it necessary to report to Yisro before returning to Egypt on his Sh'lichus?
Rashi: Because he had sworn to Yisro that he would not leave without his permission. 1
Why here, does Moshe pride himself of being the son-in-law of Yisro, whereas at the beginning of Yisro, it is Yisro who is proud of being Moshe's father-in-law (See Sifsei Chachamim at the beginning of Yisro)?
Rashi (in Yisro, Shemos 18:1): Because whereas there, Moshe was a king, here he was as yet unknown and held no important title.
What is the significance that Yisro blessed Moshe "'Lech l'Shalom', and David blessed Avshalom "Lech b'Shalom"?
Tanchuma (Shemos 18) learns this from Avner. (Regarding Avner, it says "va'Yelech b'Shalom." Tanchuma understands that so David blessed him 'Lech b'Shalom.' Perhaps Tanchuma learns from Avner, and not from Avshalom, for we attribute Avshalom's death to his evil intent - PF).