Don't count on the bubbling in your airlock for an indication if fermentation is complete. If you don't have one yet do yourself a favor and get a hydrometer. A couple of weeks in primary usually does it with a normal (as in not high) gravity beer but it's nice to be sure. If you already have one, ignore that advise.
Secondary wise, most of us skip it unless doing a long fermentation or adding fruit. Needing the primary for the next brew also comes to mind.
Back in the dark ages I always did a secondary because that is what you did. Now we know it's not always necessary and I rarely do one.