Download and run the `.msi` installer and follow the prompts. Alternately, you can download the release binary, unzip it and double click on `zecwallet.exe` to start.
Additionally, if this is the first time you're running ZecWallet or a zcashd daemon, ZecWallet will download the zcash params (~1.7 GB) and configure `zcash.conf` for you.
ZecWallet is written in C++ 14, and can be compiled with g++/clang++/visual c++. It also depends on Qt5, which you can get from [here](https://www.qt.io/download). Note that if you are compiling from source, you won't get the embedded zcashd by default. You can either run an external zcashd, or compile zcashd as well.
For support or other questions, tweet at [@zecwallet](https://twitter.com/zecwallet) or [file an issue](https://github.com/ZcashFoundation/zecwallet/issues).