They are correct. Here's another way to organize your sentences. In none of your three sentences does the verb express the principal action: #1: verb = "is"; action = "to read and work" #2: verb = "offers"; action = "to look" #3: verb = "offers"; action = "to base" In each case, you used an infinitive to express the principal action. Infinitives look like verbs but do not act as verbs. They are NAMES of verbs. They act as adjectives, adverbs, or nouns. They never have a subject (though they can have objects) and that is why they cannot behave as active verbs. Let's modify your sentences by turning the infinitives into active verbs: #1: One can read and work splendidly in this environment. #2: The perspective of this book looks at society in fascinating ways. #3: Informed by this book, you will base your decisions and actions on profound principles.

These sentences are grammatically correct and you have also used the phrases “in which to”, “from which to” and “on which to” accurately, however there were two adjustments you could have made to make the sentences better. The book offers many fascinating perspectives from which to view society. The book offers a ton of profound principles on which you/one can base your/their decisions and actions.