[OffsideSpecialist]

So, I've saved up quite a bit of money on my recent co-op term, and it turns out I have a month off school/work in August. Originally I was planning to visit a buddy in BC, but he doesn't seem to know what he's doing tomorrow never mind a couple months from now and I don't want to spend the whole month doing nothing. So I figured I might give a trip to Europe a shot. I thought about South East Asia, but I think the heat and humidity would kill me.

Money isn't really an issue, but I would still like to spend as little as possible. There are 3 rough trip itineraries I have thought of so far:
1. Dublin - Galway - Edinburg - London
2. Amsterdam - Brussels - Frankfurt - Hamburg - Copenhagen (Might take Brussels out of this one, many things I've read suggest it's not really worth going to).
3. Munich - Stuttgart - Vienna - Prague - Budapest

I'm 21, basically I enjoy architecture, natural scenery and would like to visit places with a good nightlife. I plan on using rail as my main form of transportation. I just need some ideas on places I should or should not go to, things I should or should not do etc. A lot of people here seem to be regular travelers, so I figure that this would be a good group to ask. I plan on doing the whole backpacking and staying in hostels thing. Also, the cities I listed are not set in stone.

I have my passport, I plan on photocopying all my documents before I go. Is there also anything I should know about airplane travel? Also, it looks like my flights will probably have connections...do the airport staff bring my luggage from one plane to the next or do I have to find my luggage at the carousel and then check it for the next plane? I would also appreciate any kind of general travel advice. That's all the questions I can think of for now, I'll probably post more in this thread once I think of them. Thanks in advance.