This STEP course explains, how you communicate to your clients, what you need to know to be convincing, how to estimate the building costs and make a detailed calculation. We also show essential (free) recommended programs, so that you are able to post a) image + text (website, blog, facebook, twitter, pinterest, instagram), b) a slideshow with music or text (facebook, twitter, youtube, website, presentation, online-course), c) a video (youtube, website, blog, facebook, twitter, online-course). We introduce the most recommended and easy to learn programs Photos (Windows) or Iphoto (Mac), Photofilmstrip, Canva, Zoom, OBS and Shotcut (W+M). With these 6 programs you can do nearly everything to communicate on the web in a professional way.