Start with some basic intro to algorithms. Dig into the field of information retrieval a bit. Read up on things like reverse indices, bloom filters, ranking (tf

Start with some basic intro to algorithms. Dig into the field of information retrieval a bit. Read up on things like reverse indices, bloom filters, ranking (tf/idf, bm25, etc.), state machines, etc. Then maybe look at vector search, nlp, and a few other fields. That about should cover the basics and give you some level of understanding of how different features in search engines work. The bar is pretty high if you want to do a good job.