Gaming Okaeri! Chibi-Robo: Happy Richie Osouji HELP

[Sora de Eclaune]

Could anyone help me with Okaeri! Chibi-Robo? I can't find any walkthroughs and I don't speak Japanese, so I don't know what to do. These are the questions I have:

1) How do I get the squirter? Nevermind, turns out I was calling it the dropper and didn't realize the squirter was the dropper.
2) How do I get the scuba gear? (Or, how do I empty the sink and/or get the shark to leave?) I figured this out. I just talked to everyone like twelve times.
3) How do I get the toothbrush? figured this one out too.
4) How do I access more of Jenny's room?
5) Why does the dog always sound/look sad?
6) When do I unlock more room upgrades? Figured this out too.
7) My cord can go up to 100m right now, but how do I make it go further? Nevermind.
8) What is the computer in the Chibi House for? Just info?
9) How do I get up the bookshelf in the kid's room? I can get halfway up but then get stuck.
10) How do I get into the basement thingy?