An Insight answers a question. A guide walks a whole subject. A check does something neither can do - it asks about your situation and tells you where the gaps are. Nothing to sign up to, and the result is on the screen at the end whether you get in touch or not.
An in-house lawyer or a retainer, whether a Discovery Day fits, which share scheme suits, and whether a contract claim is worth pursuing are all being built. The longer reads live in Guides, and the shorter answers in Insights.