Edit the page http://wiki.apertium.org/wiki/Celtic_languages on the apertium wiki, making it look like http://wiki.apertium.org/wiki/Turkic_languages and http://wiki.apertium.org/wiki/Indic_languages.  It should have a short background on Celtic languages, a table summarising all apertium Celtic stand-alone language packages (Welsh, Breton, Scottish Gaelic, etc.), and a table summarising current pairs.  Make sure to implement stats pages correctly for all languages and pairs.