Website gets little to no organic traffic; what are we doing wrong?

I don't know if such posts are allowed here or not, but if anybody can tell me what we are doing wrong with our site to get little to no organic traffic it would be really appreciated. Do not sugar coat your words for me, let me learn the hard way. Our website is "Techtroduce" It has been up since July, Adsense monetization approved at the end of October and we saw a massive drop in organic traffic since the December Google Spam Update.