In theory: yes, you can! You can discover new rules and practice. But in languages, the most important part is to actually use what you learn! Learning new rules without ever using them in a real context is never enough! For this, it is necessary to write and to speak, to interact with other persons. Of course, you also need to practice your listening and reading skills, which is not possible in the Library.
On the other hand, all this is achievable in our courses or on our platform, that will allow you to apply everything you’ve learn by writing, speaking, and to improve your comprehension skills.