Well, once I have a more detailed idea of where I want to go, then it'll be worth asking whether or not to get a rail pass, right?
I have a book on street fashion and it said to look at the Shibuya 109 building. My friend went there but she said she felt intimidated because she was dressed touristy and everyone was really pristine, haha. But I really want to see it.
I've been told to visit Harajuku on a Sunday, since I'm a cosplayer I'd love to see everyone else! I'm planning to wear normal clothes (I don't want to stick out like a sore thumb, particularly as I've been told people get changed in Harajuku and back again before going home.)
And of course my main passion is video games so Akiba is a must.
Thank you for your advice, JohnBraden and godwine.
(I've suddenly become all excited, weee! Holiday! Yay! Haha.)