I have been out of college for quite some time, but I wanted to contribute.
1) Dedicate an area to be used SOLELY for studying. If you study in the same place that you do other activities (eat, sleep, play video games, watch tv, etc), it will be very easy to become distracted.
2) Constantly ask yourself "what does this remind me of?" Whenever you make connections between new information and old information, it helps you retain the new information.
3) Find ways to relate what you are learning with something you feel strongly about. When you link emotions to something you learn, it will help you remember things.
4) Get good quality AND quantity of sleep. I recommend 7-9 hours. REM sleep is important for retaining information. In his book "Why We Sleep," Matthew Walker talks about studies in which people who were getting less REM sleep had a harder time remembering information that they had learned the night prior.
5) Before learning something new, ask yourself "What do I think this means?" Making predictions will allow you to feel good if you get it right (and thus reinforces it), and if you get it wrong, you will remember it.
6) Come up with acrostics/acronyms/mnemonic devices. For example: In elementary school, we were taught "My Very Endearing Mother Just Served Us Pizza" as a way to remember. An acrostic that has helped me with prayer is PRAY (Praise, Repent, Ask, Your Will Be Done)
7) Spend time with people who prioritize studying. I once learned that "You are the average of the people you spend the most time with." You adopt their values. You adopt their habits. You adopt their priorities. You adopt their interests. Making sure you choose to be around people who are studious will not only hold you accountable and make you want to study more, but you will be able to learn various skills from them.
8) Create a study schedule. If you don't schedule your study time, chances are you will put it off. Come up with specific times that you would like to dedicate to studying, and follow through.
9) Turn your phone OFF, or at least on silent while studying. Phones are distracting.