[kacir]

Originally Posted by kovidgoyal

Commit will only commit your changes locally, unless you have used bzr bind to bind your branch to a remote one.

Thank you for clarification.

So. The steps that work for me on Linux are:

1. Set your ID - bzr whoami John Smith <JSmith@thisisnotmyemail.com>
2. Get sources from net to my machine - bzr branch lp:calibre (Issue command from inside your working directory, for example ~/src directory. The command will create ~/src/calibre directory and populate it (about 400 Mega Bytes of files) )
3. Make desired small tweaks, such as replacement of splash screen, icons, little change in some *.py file
4. Commit your changes - bzr commit (issue command in your private calibre development directory ~/src/calibre)
5. Every week or so merge changes from the net, so your version of Calibre is still up-to-date - bzr merge (again issue command in your private calibre development directory)
6. Repeat steps 3-5