When you extract the HISE source code in Tutorial5 you'll find a
Readme.md file in HISE-master > tools > SDK. Perhaps this helps you with hooking up the SDKs (it did for me :)). ( i have ASIOSDK2.3 and VST3 SDK in this folder)
When you start the Projucer in HISE-master > tools > projucer, open the HISE Standalone project in HISE-master > projects > standalone > HISE Standalone.jucer and click the save project and open in IDE in the Projucer (assuming everything went well) you should be able to compile HISE and also be ready to compile plugins and standalones built with HISE.
hope that helps a bit,