This question which the questioner mentions does not only happen to a student of the Sharee'ah, rather it is general to everyone. When he sees differing of the scholars regarding a fatwa he gets perplexed, but the reality is that there is no confusion in that because a person, when the fatawa differ, he follows what he sees to be closest to the truth, in accordance to the expansiveness of his knowledge and the strength of his faith. Just as a person, when he is sick and two doctors differ with respect to his illness, then he takes the speech of the one that he sees as being more preferable when the cure is described to him. And if the two matters are equal to him, meaning that he does not prefer the opinion of one of the two differing scholars over the other, then some of the scholars state that he follows the saying: "[Take] the more severe position because it is the safest." Some of the scholars state that he follows the easier position because that is the origin in the Islamic Sharee'ah, and it is said that he chooses between the two.
However, the correct position is that he follows the 'easier' position because this conforms with the ease in the Islamic Religion due to the statement of Allaah, the Blessed and the Most High:
íõÑöíÏõ Çááøåõ Èößõãõ ÇáúíõÓúÑó æóáÇó íõÑöíÏõ Èößõãõ ÇáúÚõÓúÑó
"Allaah intends for you ease, and He does not want to make things difficult for you."
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"…and He has not laid upon you in religion any hardship"
And his (salallaahu 'alaihi wassallam) statement:
"And make things easy and do not make things difficult."
[Al-Bukhaaree in 'Al-Ilm' (69)]
And also because the origin is acquittance or discharge from responsibility in an affair until he establishes that which removes this origin. This principle is for the one who is not able to arrive at the truth by himself. And if he is able to do that, such as the student of knowledge who is able to read what is said in this affair, so gives preference to what he sees to be the preferred position due to the Sharee'ah proofs with him, then it is binding upon him to research and read to attain knowledge of that which is more correct from these statements regarding which the 'ulemah differ.