I assume the work day is the same as in your country, we have a 40 hours work week. Most people live in apartments, because we don't have too much space, or a thing what you'd call "townhouse" in America where you have one of three houses being built together to save space. Big stand-alone houses exist, they're usually affordable for the wealthier part of the population though. You'll find that most houses here are made of stone and have thick walls, which might be different from the US. When I was in the US a friend of mine punched a hole in the wall there when he was drunk. Here, you'd just break your hand. Everything is cemented.
Public transport is used by everyone, even wealthy people, to avoid rush hour. Everything has a public transport connection to some degree, if you live in a really rural area you might not, or have to walk 45 min, or only have a bus coming in two times a day. But that's rare. In a big city busses come every 10-20 min, subway lines come every 10 minutes, long-distance trains come every 1-2 hours. We also have sidewalks everywhere. We have big grocery stores and smaller ones. Most people go to smaller ones. They have everything you need and they are usually in about 10 min walking distance when you are living in a suburb or city.
Every city has an oldtown as a city center if that wasn't bombed in WWII. It's not skyscrapers (except Frankfurt) but medieval buildings, churches, city palaces, city walls, etc. - here you have a city scene fro Nuremburg (Nürnberg) which is my birth city.
It's where all the restaurants, cafes and boutiques are. You find malls a bit more outside, they look like this:
German food is very quaffable and satiably, but not very spicy or heavily seasoned like in Mediterranean or Latin or Asian countries. Here are big potato dumplings, meat and red cabbage, a typical meal in the Southern part of Germany:
Germany is a diverse state, every state has its own history, traditions, architecture and food. Almost all states have some form of town festival or village festival. It's usually some big beer tents, carousels, and food stands. In the south people were traditional dresses on these. Everybody gets drunk on there. Generally, alcohol culture is very liberal here. You can buy beer when you are 16 and liquor when you are 18, and you can drink it everywhere in the city except maybe in the city hall or something. It's normal to see people drinking a cold beer on their home from work. Beer is generally very good here. There are tons of tons of local brands, brewed by the oldest consumer protection law in the world (Reinheitsgebot from the middle ages) but still very affordable (you can buy quality beer for 1€ but you can also buy crappy beer for 30 cent).
In their free time people do the same stuff they do in America, movies, dinner, sports, bars, clubs, football (soccer), etc. although the culture might be a bit different. Feel free to ask more.