Where to get help
The first place to look for help is in the ‘Preferences’ dialog. All options have clear descriptions, and there are a lot of options. If you want to change something about calibre there may already be an option for it. It’s also a good idea to familiarize yourself with the preferences because parts of it, such as conversion, are just defaults and will be presented to you at different times for fine-tuning on a per e-book basis.
The next place to look is the online user manual. Click the ‘Help’ button in the tool bar to have the user manual open in your browser. There is a wealth of information in the user manual including tips and solutions to common problems. It’s also a good idea to check the calibre FAQ for answers to common questions.
Finally, there is the calibre forum on Mobileread which is the official help forum. There are a number of knowledgeable users who answer questions. Also, Kovid and myself actively participate in helping new and veteran users. If you have a question or need help this is the best place to go. If you’ve found a bug or would like to request a new feature it’s okay to ask about it on the forum but it’s also a good idea to submit it to the projects bug/issue tracking system. Forum posts tend to get lost over time while the tracking system makes it easy to see what needs fixing or worked on.