What was special about Avraham's camels?
Rashi: They were different than the camels of others, in that whenever they left Avraham's domain, they left muzzled, in order not to graze from other people's fields.
What are "all the good (things) of his master" to which the Pasuk is referring?
Rashi, Targum Yonasan and Ramban #1: It refers to a Sh'tar Matanah in which he gave everything that he owned to Yitzchak, 1 as an incentive to allow their daughter to marry him.
Seforno: Silver and golden vessels and clothes. 2
Rashbam: Important men belonging to Avraham's household. 3
Ramban #2: The Pasuk means to say that Eliezer was able to take ten camels, because all his master's assets were under his jurisdiction 4
Ramban #3: Avraham took with him ten camels laden with all the best of Avraham's household. 5
Hadar Zekenim: Ten men of Avraham's children (i.e. Talmidim), for Birkas Eirusin.
Presumably, this means that he would inherit it after his death (Refer to 25:5:1:2). See also Ramban.
To which the Torah refers later (in Pasuk 54).
As we learned earlier (in Pasuk 2).
Where was Aram Naharayim?
Rashi: Aram Naharayim lies between two rivers (the P'ras and the Chidekel), 1
It was the country (in which Charan was situated and) from which Avraham stemmed (Berachos, 13a).
Why does it say "va'Yelach" in between "Vayikach" and "v'Chol Tuv Adono b'Yado"?
Seforno: What the Pasuk means is that before leaving with his master's camels, he obtained permission from him to do so.
How could Avraham give everything to Yitzchak? One may not transfer inheritance, even from a bad son to a good son!
Refer to 25:5:151:1,2.
רש"י: שהיו יוצאין זמומין מפני הגזל: למה נזקק אברהם לזמום את פיהם והרי חמורו של רבי פנחס בן יאיר לא היה אוכל מהגזל?
גור אריה: אסור לסמוך על הנס.
רש"י: שטר מתנה כתב ליצחק על כל אשר לו: מנין דרשו זאת?
גור אריה: כך משמע מלשון הפסוק- "וכל טוב אדוניו בידו".
רש"י: שטר מתנה כתב ליצחק על כל אשר לו: כיצד עשה אברהם כך, והרי אסור להעביר נחלה מבן אחד לבן שני?
גור אריה: שרה אמרה "כי לא יירש...עם בני...יצחק" [ורק יצחק הוא היורש].