How to display in the CP only the current user's entries?
Craft currently doesn't have the concept of "read" permissions for elements (entries, tags, categories, etc.)... technically any user that has access to the Control Panel has read access to every Craft element whether there is a nice UI way to access them or not.

Feel free to comment/vote on this feature request though, which would enable what you're looking for: https://github.com/craftcms/cms/issues/887