the new city center
it is now east-berlin (ost-berlin) which is the new city center, so the district is upside down , everything is being rebuilt, you will see dozens of trucks coming from the czech republic for the works ; the former west-berlin centers are now quite far by foot
Online German language tuition
I highly recommend first time visitors to Germany to visit http://www.languages4everyone.com/ for important stuff on the language. I'v logged on there and the website proves the best language site to me.
Just outside Berlin is Potsdam, the city of Friedrich the Great. The main reason for being here is the Park Sanssouci, highlighting Friedrich's wealth and tastes. Within the grounds is a castle, a windmill and an orchard, amongst other things.
Budget Berlin souvenirs
Under Den Linden is one of the most beautiful parts of Berlin, with lots of souvenirs shops - mostly up the st., when you face Brandenburg gate. It doesn't really matter which one you enter, since most of them sell more or less the same stuff and charge unbelievably high prices.
DO NOT buy pieces of the Berlin wall there - you can find all over the city, for much lower prices, starting 0.5 EUR.
You can find some Ampelmenn products in most of the stores, which are also pretty expensive - starting at about 5-10 EUR for simple stuff, like hats and postcards.
There are some nice T-shirts and woolen hats, as well as a lot of very cool postcards and posters, but they too are pretty pricy. Generally speaking, Berlin is a city with lots of bargains - most of the shops in the east part quarters are surprisingly inexpensive.
Also, there's Bergman st. in Kreuzberg (and many other places in this nice quarter), where you can find great stuff and pay less. There's also some great second hand clothing shops there, and a nice market.
AVOID the shops in the west side. If you're looking for boutique shops, cloth or souvenirs, try to look for little shops in the Mitte quarter (also the place with most of the tourist attractions).
Also, you can find some inexpensive gifts, souvenirs and clothing all over the net. I like very much this one that I found lately: http://www.cafepress.com//berlin_2006 I bought a wonderful coat for 4 EUR only, at a second hand outlet. My GF bought 6 kg of cloth for 12 EUR in Bergman st. We bought some very expensive Ampelmenn goods, and lots of tiny souvenirs for cents - outside the central places.
This place brews it's own beer and sells it by the meter? Yes, the meter! A meter of beer consists of a long wooden tray with 12 glasses of 2,5 litre beers on it. Costs around 30 euro and is available in dark or light beer or both. For a bit extra you can also enjoy this with a meter of schnappes too! Casual.