御食い初め[okuizome] weaning ceremony
為初め[shisome] outset
為初める[shisomeru] to begin to do
仮初[karisome] temporary
業界初[gyoukaihatsu] the industry's first ...

月初め[tsukihajime] beginning of month
最初[saisho] beginning
初めに[hajimeni] to begin with (used as an introduction)
初めは[hajimeha] at first
手初めに[tehajimeni] at first

まず隗より始めよ[mazukaiyorihajimeyo] start with the first step
テキスト開始[tekisutokaishi] start of text
ヘッディング開始[heddingukaishi] start of heading
一部始終[ichibushijuu] full particulars
開始[kaishi] start

月始め[tsukihajime] beginning of month
元始[genshi] origin
元始祭[genshisai] Festival of Origins (January 3)
原始[genshi] origin
原始教会[genshikyoukai] the early church