Not sure, whether it has been posted already or not, but I'd like to recommend WataMote (Watashi ga motenai no wa Dou Kangaete mo Omaera ga Warui), since the main protagonist (Tomoko, probably seen images of her online) is just extremely relatable (even though a little extreme) and the whole plot is basically her trying to gain a regular social life, getting popular and failing due to her hilariously stupid attempts at that.
Links:
MyAnimeList: http://myanimelist.net/anime/16742/Watashi_ga_Motenai_no_wa_Dou_Kangaetemo_Omaera_ga_Warui!
Crunchyroll: http://www.crunchyroll.com/watamote-no-matter-how-i-look-at-it-its-you-guys-fault-im-not-popular
Inrcedibly cute female solo version of the intro: https://goo.gl/sKg7oT
Edit: POST #888! \o/