The ones that most likely will encounter in the near future, or has in the past.
If no order is decided you must follow the CS curriculum order because it has a sense and the concepts are bases on previous ones.
The most common are other data structures than arrays, like linked lists, and other algorithms for search and sort.
Other way to deep dive is to learn the internals of your language, though making better optimized code and learning about lower level CS, like how. Sort is implemented in your language.
The ones that most likely will encounter in the near future, or has in the past.
If no order is decided you must follow the CS curriculum order because it has a sense and the concepts are bases on previous ones.
The most common are other data structures than arrays, like linked lists, and other algorithms for search and sort.
Other way to deep dive is to learn the internals of your language, though making better optimized code and learning about lower level CS, like how. Sort is implemented in your language.
Later edit:
Minimal algorithms and data structures
Good math classes at Khan academy: Algebra 1&2, trigonometry, statistics
Khan academy computer science