In my university days, I had a girlfriend who was studying German and Latin (to become a secondary school teacher in those two subjects). My wife I won over with the much more practical modern language Chinese. Incidental study of Latin is useful to native speakers of Romance languages (French, Spanish, Portuguese, Italian, Romanian, and the like) to understand the origin of their native language, and somewhat less useful to speakers of most languages spoken in Europe, whether Indo-European languages or not, to understand the sources of much of their vocabulary. (Concentrated study of the sources of vocabularly of modern languages through study of word roots
is very helpful, but that doesn't require learning Latin as a language as such.)
As long as there are great landmarks in Western writing like Newton's Principia available in original Latin editions, there will always be a reward for learning Latin. But with many languages to learn to speak to many people, Latin will not be in first place as the language to learn next for interesting live conversation.
What I said then was that I read a lot of speed-reading books when I was in college. I was working my way through, living in my own rented place, so time was of the essence. But I eventually decided that a lot of speed-reading techniques are less useful than they appear. The most helpful book I discovered during that research phase was Reading for Power and Flexibility
which was a refreshing change of emphasis from most other speed-reading books.
Good techniques I learned from various sources were pre-reading (for example, making sure to read the whole table of contents, the whole preface/introduction/foreword, and even the whole index before starting the book proper); focused vocabulary development targeting words with Latin and Greek roots used in the international scientific vocabulary; and daring not to read a whole book if reading one section of it would answer my question.
Good vocabulary development books are English Vocabulary Elements
and English Words from Latin and Greek Elements
Both of those books will help you to read faster by helping you recognize word meanings from word roots.
Good vocabulary development books are
Fresh book recommendations delivered straight to your inbox every Thursday.