Season 2013 Baseball tickets?

I live in Japan, and *have a vague* understanding of the Loppi machine. So I can go and muddle through it. But I just need to know when they tickets will start going on sale. We may try to go to a giants game and I know it can be hard if you don't get there quick.

Thanks!

1) how to Loppi
http://l-tike.com/guide/loppi_english.html
http://youtu.be/Eu_z2UGEWx4

2-A) home game(mostly Tokyo dome/東京ドーム)
http://www.giants.jp/G/ticket/201303.html
→ 販売状況(sales info) →発売中(now on sale)
→ 対戦相手: visitors team name
http://en.wikipedia.org/wiki/Central_League
http://en.wikipedia.org/wiki/Pacific_League

Giants is Central League(Ce-league) team
but in open=off season games(in may) and interleague gamae(in May) plays vs "Pa-league" teams.

2-B) visitor game
http://www.giants.jp/2013schedule/
sales info : must go to visitor taems web.
- gray date means visitor stadium games.
- yellow date means guest stadium as home game.

oops!

open=off season=spring training games(in March)

Thanks! That is very helpful!!! :)