Fear Itself: Venom
Head on over to Marvel.com and check out the Fear Files interview with Rick Remender. It is the perfect follow-up after you finish issue #2 of Venom. Remender explains how the symbiote and Flash both need each other and what fears they both have.
As someone who knew relatively nothing about Flash before he was given the Venom symbiote, I can appreciate the scene at the end of Venom #2 a little more with this brief history of Flash. I think Remender is doing a wonderful job of developing the symbiote as a character; it needs a host to be happy and Flash comes with enough baggage to keep the symbiote satisfied for a long time.