How does merging work?

See merge

What are some best practices for distributed development with Mercurial?

See WorkingPractices

How do I import from a repository created in a different SCM?

See ConvertingRepositories for various tips.

What about Windows support?

See WindowsInstall for getting started using Windows.

Like TortoisSVN, we recommend to to turn off the indexing service on the working copies and repositories, and exclude them from virus scans.

Is there a GUI front-end?

See OtherTools for information on graphical merge tools and other front-ends.