How can I read man pages in my native language?

Solution 1:

1. Install the package named language-pack-<two letter language code>
   e.g. sudo apt-get install language-pack-es for Spanish
2. Install the package named manpages-<two letter language code>
   e.g. apt-get install manpages-es for Spanish man pages.
3. Set your LANG environment variable to <language>_<country>.<encoding>,
   e.g. LANG=es_ES.UTF-8
4. Run man

List of language codes.

Solution 2:

First part of question already answered. This will answer second part of question.

Look at this page and locate you language and open the page for your language team from the link.

https://translations.launchpad.net/+groups/ubuntu-translators

If your language is not in the list refer https://wiki.ubuntu.com/Translations/KnowledgeBase/StartingTeam on how to start one team

These are translated by community of translation volunteers.