Try to identify three important points every hour and try to think of them twice or thrice in that hour.
This may an easy way to accumulate knowledge throughout the day.
These three points can be repeated also after some days. You can recall these three points very easily and along with them many other points you learned during that hour will also be recalled by the memory system of yours.
Learn some points very very well and many more points will come out of your by an association mechanism.