Ideally, you should spend 5-10 hours per week on Zero to Launch. The more time you put in, the faster you’ll see results.
You can also download the material to listen to on your phone, or read the transcripts — whatever's easiest for you. A minimum of five hours each week is my recommendation, but because Zero to Launch comes with a lifetime access, you can go faster or slower. Above all, consistency is what really counts when it comes to succeeding with Zero to Launch.
Can you only spare 3 hours per week but do it every week for 6 months straight? Great, we think you'll find success as long as you stick with it.
I get asked this question a lot so I recorded a video with my answer. Check it out here: http://growthlab.com/ztl/faq/#How-much-time-does-it-take