The Manual for The Two Umpire System (PBUC red book) is 2 man mechanics only. The CCA manual, has 2, 3 and 4 man mechanics. If you are just starting you are not likely to need 3 and 4 man for awhile. The PBUC Umpire Manual is a decent book also.
http://www.honigs.com/browse_products.asp?Cat=2&Sub=149
http://www.minorleaguebaseball.com/m...c=_ump_manuals