To master Tokyo life,you should try to use Yamanote-line of JR-East.
There are a lot of populer stations you've heard Shibuya,Shinjuku,Akihabara and so on.
Many people upload movies to YouTube about Yamanote-Line.

http://s-ohtsuki.sakura.ne.jp/jr/yamanote/newpage00.htm

http://www.youtube.com/view_play_list?p=8B306B62E0955A4E
http://zapanet.info/new/douga/?keyword=%E5%B1%B1%E6%89%8B%E7%B7%9A
Akihabara=秋葉原
Ikebukuro=池袋
Shinjuku=新宿
Shibuya=渋谷
Shinagawa=品川

Many things begin in April.
For example,the train which I use every day to commute Tokyo got crowded
with the new recruits.
Every year new recruits of the year are assembled near Tokyo to educate
how to implement their work.

Japan Productivity Center For Socio-Economic Development classify the
recruits of this year into "cluster of curler "because of their tendency of their
thinking & behavior.
Details is written below.
http://activity.jpc-sed.or.jp/detail/lrw/activity000857.html

In May recruits will be sent each directions for on-the-job training,so that trains wil be not crowded.

March is symbolic of separation, because March is the end of year in Japan.
After the graduation,people proceed in each direction.
Every time March comes,I remember one of my freind of my school days.
He wanted to be "Art motortruck driver".

I introduce the site posting a lot of artistic pictures of Art-Truck.
http://hccweb1.bai.ne.jp/~hcj52101/in10.html

I commute to work by train for more than 7-years from Yokohama to Tokyo.
I see the cities view transition . It is very exciting to me.
Tokyo & Yokahama is now under wide-scale redevelopment.

See the following sites if you interested in landscape of Tokyo.

http://blogs.yahoo.co.jp/monakichisan
http://building-pc.cocolog-nifty.com/helicopter/
writen in Japanese only. Click & see.

There is the System of Anti-Google.
http://www.google8bu.com/
To say reluctantly, the Site is writen in Japanese only so that
it is hard to understand how to use.
But it is very useful I think.

This site is the search system which targets sites of geting out of
Google search target.
To be opposed to Google's huge System, ∞Eyes Project was formed.
http://www.google8bu.com/8eyes/index.en.html

I live in yokohama.
On every weekdays I go to office of my workplace in Tokyo.
About 1-hour I spend in the train to my office and about 1-hour I spend in the train to my house.
Ordinary people living in Yokohama maybe takes the same time in the train as me.
In-train hours many people are playing the game Wii , playstaion-portable(PSP) and listning to music with iPod.
I sometimes encounter the person who suddenly laugh listning to the fun story by iPod.

Some peple read blogs connecting the net with the cell-phone.
A few people is watching TV with the expencive cell-phone.

Everyone is lisning thorugh headset and nobody talks , so it seems very starange for foreigner I think.