想去捷克自遊行應該從何入手?

First, go to major travel agencies (e.g. 金怡, 康泰) and see what "must-see" tourist attractions in Czech. I assume they visit Praha (Prague) only.

Second, you browse http://www.europe-travels.net/Index/indexframe.htm to see any discount tickets on offer. Alternatively, the major airlines offer very good deals direct from the web (e.g. BA, CX)

Thirdly, you can go to the bookstore to buy some travel books (Lonely Planet or others) and copy their itinerary.

Fourthly, you should go to www.zuji.com.hk, www.expedia.co.uk, to see what hotels are available.

Given you have $20k to spend, you can live an extravagant life in the Czech. Why budget travel?

December is disasterous. Bloody cold and gets dark very early at 4pm. You should go in May with better temperatures and more daylight.

There may be some people hanging around in train stations, who claims themselves to be agents for hotels / hostels. Stay away from them.

Try the Czech pilsener. They're nice.

香港沒有直航去布拉格, 要在維也納,法蘭克福等轉機,轉火車亦可.在旅行社買機票時可訂酒店,亦可買埋火車証.
在網上訂酒店都可以 http://www.asiarooms.com/czech_republic/index.html
如樓上講,冬天不宜去. 若有時間, 可去埋奧地利,匈牙利,甚至波蘭, 各地只需坐(睡)一晚火車,連房租都慳番,
此外, 可參考以下捷克自遊行遊記
http://www.comicscafe.com.hk/travelweb/shirley1.htm