A quick search can yield similar bug and avoid opening duplicates. Take a minute or two to search our issue tracker or our forum for recent bug reports that could match yours, but don't worry if you open a duplicate: a contributor will handle it :)
Every project can be made up of several subprojects, also known as components in Weblate's terminology. Pick your favourite, or "Contribateliers" to translate this website.
Get used to the interface by try to view in detail your current location, or another location of your choice. You may also search a location by name in the search bar.