Here's the catch: Since your birth, your long term memory has been flooding with enormous information.To this day, you have been subconsciously making use of everything you have learnt in life. Say, even when you want to reach somebody's house or a place, you make use of your memory. You try to recall appropriate landmarks, street names, block numbers and so on. Even if you have the complete address written down, you make use of your memory to guide you to your destination in the best and easiest way possible.
So undoubtedly, memory is directly linked to focus and attention, and there are so many ways to improve your concentration. Whether you are in school or in college, it doesn't really matter. Learning is a never ending curve. Not only will these strategies prove useful in studying, but they will also be help you out in accomplishing your daily tasks.
Remember! You learnt the alphabet during your toddler years and yet, you haven't lost the capability to read. So don't worry or hesitate, have confidence and just proceed!