Secondary means secondary fermentation vessel. So unless you are doing a second fermentation, like on fruit or something, I'd skip that. like to expose my beer to as little O2 and wild bugs as possible. If I want to lager, age, chill, whatever, I think it's best to do that in the serving vessel. Keg or bottle...
Cold crash, in my opinion, is a great way to assist in getting particles to settle out a little quicker. But like was said before, that's after its all done fermenting