Where Perplexity fits
Use it as a starting point for exploring a topic and finding candidate sources.
Check before you choose
Read the linked pages because a citation does not by itself prove the answer's interpretation.
Find the right edition
Start with the destination for your device or the publisher's website. Use the current requirements and terms there to confirm the edition you need.
Compare the workflow
Start by deciding whether your task needs a hosted service or a model running on your own hardware. A chat assistant, a code editor and a local runtime solve different problems even when they use similar models.