All 5 meanings

1. to follow (on the same path or in a sequence) [with dative ‘someone’]
2. to understand, to be attentive to [with dative ‘something, e.g. a book, film plot, etc.’]
3. to follow (as a consequence), to result [with aus (+ dative) ‘from something’]
4. to obey, to follow, to accede, to comply with [with dative ‘instructions, advice, a request, rules, the law, etc.’]
5. (social media) to follow (to subscribe to see content from an account on a social media platform) [with dative ‘someone, an account, etc.’]