1) Ch. 18, v. 6: "Ani chosencho Yisro bo ei'lecho v'ish't'cho ushnei vo'nehoh imoh" Should not the verse have listed all the people and then said "bo ei'lecho?"
2) Ch. 18, v. 10: "Boruch Hashem asher hitzil es'chem miyad Mitzrayim u'miyad Paroh asher hitzil es ho'om" Who are "es'chem" and "ho'om," "mi'yad Mitzrayim" and "miyad Paroh?"
3) Ch. 18, v. 23: "Kol ho'om yovo v'SHOLO-M" Why wouldn't there have been "yovo v'sholo-m" before taking Yisro's advice?
4) Ch. 18, v. 27: "Va'y'shalach Moshe es chose'no" These words indicate that Moshe was the motivator for Yisro's departure. Based on the opinion that this took place before the giving of the Torah, why didn't he suggest to Yisro to stay on for this most momentous event?
5) Ch. 19, v. 11: "V'hoyu n'chonim la'yom hashlishi" Is there a specific preparation that the bnei Yisroel were commanded to do beyond not cohabiting?