It's called incremental reading and you may already be doing it occasionally without knowing it. But when you've got a big batch of different things to remember for a project, it's time to get geeky about spaced, repetitive data exposure.
As laid out by the wiki at the SuperMemo software, incremental reading lets you "read thousands of articles at the same time without getting lost". You do this by extracting data from whatever pieces you're trying to memorise, converting them into question-and-answer pieces, then letting SuperMemo (or your girlfriend or some flash cards) regularly ping you at specifically spaced intervals to answer those questions.
SuperMemo's wiki entry on incremental reading is a great one, full of tips on how to best pull data out of websites, PDFs and other reading, put it aside for questioning and know when it's time to quiz yourself. We've previously featured SuperMemo before, but this guide to how the brain works with it, or with other systems you might prefer, is worth reading — and maybe even learning. As you might guess, Wikipedia has a more concise, but also helpful, summation of incremental reading.
Incremental reading [SuperMemo Help]