Hi there,
Here is a thread with a link to an external page which offers a good explanation of L1 ans L2 regularization:
- Do you see regularization the way I do? - #2 by Christian_Simonis
- Uregulowanie rozproszenia: regularyzacja L1 | Machine Learning | Google Developers
Note: if you are interested in maths for ML: Deeplearning.AI recently announced a new course which could be interesting for you in the future. FYI: Mathematics for Machine Learning and Data Science Specialization
Best regards
Christian