First things first…
1. Make a list of things to do…
That being said, you actually have to check the list, so it is better if you have it on you all the time. What really helps is to set up notifications on the phone to remind you of what you are supposed to do. Also making a to-do list is not actually doing things, so make sure you keep track of your progress through the list.
2. Calendars can also be helpful…
For meetings, classes, and other kind of events, where you presence is necessary, you should have a calendar or a notebook. If you are more comfortable with technologies, then I would recommend creating a Google calendar, which allows you to have all your important dates both on your smartphone and on your laptop/PC. Again, calendar will not help you with managing your time and schedule if you do not check it regularly.
3. Assigning priority to things is a great way to manage your time…
There can be times, when you are facing too much things to do at once, then you have to think about prioritization. Some assignments have deadlines and some do not, so it is better to do the first things first and not leave the most important things for the later.