Need guidance... newbie

hi,

I have XO communications bring the T1 broadband phone channel all the way to my company, now i wish to install asterisk and use that phone line by XO to channel it to all the phones in my office and use the various functionalities that asterisk has to offer.

where should i start and how should i go about it…??

downloads.oreilly.com/books/9780596510480.pdf