Talk:Tutorial: How to Play/@comment-6152705-20150203031830/@comment-25260032-20150203034149

Answer for your first and last question:

http://kancolle.wikia.com/wiki/Tutorial:_FAQ

As for you second question:

http://kancolle.wikia.com/wiki/Akashi%27s_Improvement_Arsenal

As for the consumption of each ships, they differ from one another based of ship class.