There are many tools and apps that you can use to help manage your online studies, such as Notion and Evernote. Here’s a bit more information on how you can use each one:

1. Notion: Notion is a productivity app that allows you to create customizable workspaces for all your different projects and tasks. You can create notes, to-do lists, and calendars, as well as more advanced features like databases and kanban boards. Notion can be used to create a central place to organize your schedule, to-do lists, and study notes. You can also use it to create a study plan for each course, and track your progress over time.
2. Evernote: Evernote is a note-taking app that allows you to create notes in various formats, including text, images, and audio. You can also organize your notes into notebooks and add tags to make it easy to find what you need later. Evernote can be used to take notes during class, store and organize any reading materials, or write down your ideas for a project or paper. You can also use Evernote to make flashcards, and study your notes while you are on-the-go.

Additionally, there are several other tools you can consider using to manage your studies like:

3. Trello: Trello is a project management tool that allows you to organize tasks and projects into boards. You can use it to create a study plan, track your progress, and prioritize your tasks.
4. Google Calendar: Google Calendar can be used to schedule your study time, set reminders, and plan out your week or month.
5. RescueTime: RescueTime is a time-tracking app that allows you to track how you’re spending your time on your devices. You can use it to identify patterns in your behavior and adjust your schedule to be more productive.
6. Focus@Will: Focus@Will is a music streaming service designed to help you stay focused while you work. It offers a variety of instrumental music tracks that have been scientifically proven to boost concentration.

These are just a few examples of the tools that are available to help you manage your online studies. It’s important to find the tools that work best for you and your unique needs, and to experiment with different tools to see what works best for you.