Knowledge begins by the attainment of the small (issues) before (entering into) the big (issues). If you have attainted (and mastered) the small issues before the big issues, then verily you are on the path of knowledge. However, if you begin by plunging into the major issues which require (extensive) research and the (proper) arrangement (of related information) and wherein the Scholars have disputed in; (if you plunge into these issues) as some of the students of knowledge or novice to knowledge have done, without knowing the small and clear issues, then knowledge will leave from you (i.e. you will not accomplish much in the fields of study).
Thus, I stress the gravity of attaining knowledge by taking things step by step; for verily knowledge is sought (gradually) through the passing of days and night.
The shaykh also added:
Knowledge necessitates constant follow up, memorization, review and study without losing hope and feeling despair. Rather, it is a must that you take things step by step beginning with that which is most important (only to move on) to that which follows it in importance. (If this is done) verily you will attain from knowledge that which Allah wills.
 TN: Shaikh Saalih 'Abdul 'Azeez Aalish Shaikh (hafithahullah) is the Minster of Islamic Affairs of the Kingdom of Saudi Arabia.
 TN: These excerpts were also tweeted on the Twitter account that shares benefits from the Shaikh (hafithahullah).