Where can i find snippets? First addon dev

I’m relatively new to python . I have coded for a long time in java. And i remember the best way i learnt was using snippets and playing around and troubleshooting etc.

I want to make an addon for example for netflix . Accesses netflix, Chooses tv show / Movie. launches on click. Ticks on finish.

P.s – i want to do this for private use, not releasing publically.