Ok, I'll try to help you navigate through the website.
On the left side, there's a grey box titled "Katalog", which means catalogue. There are 4 global categories, which should be readable for everyone ("Farben" = colours). So they're selling Shadowforge, Neomics and classic Blood Bowl minis, plus GW colours.
Let's assume you'd like to buy normal Blood Bowl minis, so we choose the Blood Bowl catalogue. Next step is a bit further to the right, it's called "Produktgruppe" = product groups. These are general categories, most of the stuff is in english. "Regeln & Magazine" means rulebooks & magazines, "Schiedsrichter" are refeeres. Let's choose "Teams", since we'd like to buy the GW Orc team.
On the far right side, there's a sidebar "Produkte", which means products. Now we're finally getting to our minis, choose "Orks" for Orcs. You can probably translate most of the races by yourself, "Menschen" means Humans, "Zwerge" are Dwarves and "Echsenmenschen" are Lizardmen. The rest of the stuff is pretty similiar to the english names.
Now we see all those GW orc minis they're selling. There's a blank box in the column "Menge", there you can put in how many you'd like to buy. Let's assume we need 3 orcland raiders boxes, so we fill in 3. A column to the right, theres "In den Warenkorp", which means to put the stuff in our virtual shopping basket.
It seems like nothing has happened, but if you klick on "Warenkorb" at the top navigation bar, you'll see the items that you've put in. Wire Transfer or PayPal (Europe) should be your method of paying. Notice that MwSt. means VAT (value-added tax).
If you'd like to buy the stuff, klick on "bestellen" at the buttom of the page, which means to order the stuff. Now you'll have to fill in your adress.
Herr/Frau = Mister/Miss
Vorname * = First name
Nachname * = Last name
Straße * = Street
Postfach = PO box
PLZ * = postcode / zip code
Stadt * = town
Bundesland = federal state
Land = country
Telefon * = phone number
Fax = like the english word
E-mail * = same here
Mobil = mobile
THose marked with a star (*), you'll have to fill in.
When you're done, choose "Weiter", which means next. The next page is optional information, if you'd like to add some text to your order or need a different delivery adress (Lieferanschrift).
Another "Weiter" shows you a summary of all your information. You're reaching the point of no return from here. If you choose "Abschicken" at the bottom of the page, you've finally done your order. Can't help you from there, since I didn't want to order anything from them.
My last advice is the same as antipixis, contact them via mail if you have any more questions. "Kontakt" on the top navigation bar will show you their e-mail adresses. I'd write to: service (at) gxmail (dot) de
