Please see here for full documentation. You can get extra support and join the discussion on our Discord support server.
Download the FlyingDemo project and play around with it. A packaged version is available from Releases, or you can clone and build it yourself (don't download with the GitHub button though, because the repository uses git-lfs).
There is also a benchmark project which I used for the benchmarks here.
For bugs or feature requests please open an issue on this repository, or find help on Discord.