412 Build’s business is training teen entrepreneurs Share this post Imagine having the chance to pitch your entrepreneurial idea to the executives at Google. Imagine being 17 and having that chance. That’s just part of 412 Build, a five-week program that accepted its second cohort of 12 teenagers last week. With funding from the Hillman Foundation and using Chromebook computers donated by Google, the entrepreneurial training program brings the nonprofits GTECH Strategies and City of Play together with the TechShop, Innovation Works and AlphaLab Gear on behalf of young people who might otherwise never get such a boost.