Lawrence H. Dunn III from FSU put together a really nice honors thesis that provides a gentle overview of HoTT.  The author was an undergrad math student, so there might be a couple mistakes here and there, but the text was quite accessible.<p><a href="http:&#x2F;&#x2F;diginole.lib.fsu.edu&#x2F;cgi&#x2F;viewcontent.cgi?article=1357&amp;context=uhm" rel="nofollow">http:&#x2F;&#x2F;diginole.lib.fsu.edu&#x2F;cgi&#x2F;viewcontent.cgi?article=1357...</a><p>If you find anything else, let us know!