Season your image to taste. Dig out detail with the Wavelet Sharpen ('Sharp') module, enhance Contrast with the Contrast module and fix any dynamic range issues with the HDR module.
Next, you can often restore blurred-out detail (for example due to an unstable atmosphere) using the easy-to-use Decon (deconvolution) module.
There are many ways to enhance detail to taste and much depends on what you feel is most important to bring out in your image. As opposed to other software, however, you don't need to be as concerned with noise grain propagation; StarTools will take care of noise grain when you finally switch Tracking off.
If you just loaded an image, all pixels in the whole image will be set in the mask, so every pixel will be processed by default.
You can convert everything you see to a format you find convenient. Give it a try!