Shukla Yajur Ved

Yagnyavalkya, after vomitting what he had learnt from his Guru, Vaishampayan, worshiped the Sun-god and got another version of the same Veda from him. This branch came to be known as Shukla Yajurveda. There are two branches of this: Vajasaneyi Samhita (Maadhyandina) and Vajasaneyi Samhita (Kaanva).  Similarly, its Brahmans also represent these branches:  Maadhyandin Shatpath and are also of two Kaanva Shatpath.

Vajasaneyi Samhita (Maadhyandina): Followed in Bihar, Madhya Pradesh, Gujarat, North India.
Vajasaneyi Samhita (Kaanva): Followed in Maharashtra, Odisha, Telangana, Andhra Pradesh, Kerala, Karnataka, Tamil Nadu

Obviously this legend is highly symbolical. The following is one plausible explanation:
Yagnyavalkya being the most brilliant of all the students of Vaishampayan, had mastered the whole Yajurveda. He was now asked to teach it to the other disciples. He taught it to the extent of his memory. Some part of the Veda slipped out of his memory due to the curse of his guru. After losing it, he had to regain it, maybe in another form, by his own tapas or austerities in which he succeeded. He pleased God through meditation in the Sun-form and got it.

Samhita-Brief Details Vajasaneyi Vajasaneyi
# of Mandals 40 40
# of Anuvakas 303 328
# of Sukta ?? ??
# of Mantra 1975 2086
Lost Branches Jabala, Baudhya, Sapeyi, Tapaniya, Kapola, Paundravatsa, Avati, Paramavatika, Parasara, Vaineya, Vaidheya, Katyayana and Vaijayavapa.


Brahmans-Brief Details Maadhyandin Shatpath Kaanva Shatpath
# of Mandals ?? ??
# of Anuvakas ?? ??
# of Sukta ?? ??
# of Mandal ?? ??


Brahm Vidya Gyan Vidya Sadhna Vidya
Jaabaal Ishavasyam Advay Tarak
Jaabalya Niralamb Trishikhi Brahman
Tureeyaateet Brihdaranyak  
Hansa  Mantrik   
 Param Hansa    
Mandal Brahman    

 Please visit any of the following to learn more:

Link Comments
Veda : Sanskrit Documents  Has many vedic books, in many languages, with commentary from many scholars. Also audio of many mantras
Yajurved:  Good to read the vedic books - in sections. This link will directly take you to Yajur Ved page.
Hindupedia - Yajur Ved This link takes you directly Veda page of the site. The website has many more content and worth a visit.
Hinduonline - Shukla Yajur Ved The site contains Veds, UpVeds, Mimansa etc. in pdf and html.