You didn't give an idea as to how much you know about video editing, especially with a Magix product. If you are just starting out and you haven't used Movie Edit Pro or a previous version of VPX, then you should start by watching the VPX7 tutorial on the Magix.com site, followed by the tutorials for Movie Edit Pro Plus/Premium. VPX7 is just a more advanced version of Movie Edit Pro 2015 Plus/Premium. Then you should follow the manual. It is very good.
Make sure that you downloaded and installed the Free addons under the top menu, Help, and did the online update to the latest patch.