Don’t tackle them all at once or you will run out of things to say, have an ineffective content strategy, hit the wrong audience, and break the sales process.
Tangible Words spent the last 3 years perfecting our blog and e-newsletter platforms. Recently, we’ve developed our Facebook strategy. Linked In (LI) and Twitter have always been in the background but never really honed. Once we’re rocking on FB and LI and Twitter, we’ll tackle Google+ = and we’re content marketers - it’s what we do full time.
So you can get the idea that you don’t have to do it all at once, and in fact, you shouldn't, or you won’t succeed. It’s like anything else in business - you start small and grow once you’re ready.