I hope this helps you a little? If you want to know something more specific, please let me know and I'll try to offer a more detailed explanation. Don’t worry tough, many bigger German cities like Hamburg, Munich, and Berlin are pretty multilingual, and most people in those cities will be able to have conversations in English as well---especially younger generations, as English is a mandatory class in German schools, introduced in elementary.
(Please do keep in mind that although German sentence structure and grammar are overall quite similar to English, there's some important differences. For example, there are two different German pronouns for the single English word "you." In German, we differentiate between the formal "you" and the informal "you." Germans actually have two verbs to describe the use of these specific pronouns: "duzen" and "siezen," so "du" and "Sie."
First off, there's "du" which is impolite and usually used for family and friends or people younger than 18. Then there's "Sie" (with the S capitalized too), which is the polite form of it and most commonly used for doctors, teachers, strangers, people you generally aren't too familiar with. For people older than 18, no matter their job or whatever, you may ask for permission to use "du" instead, or they might just give you permission right away. Dropping those formalities is becoming more common among younger people. Regardless, if in doubt, sticking to the formal way is definitely the safer choice, as some people may deem anything else disrespectful.
Aside from "du" or "Sie", there's various other forms of the word depending on who it is you're talking to, and how the word is used. It’s much like he/him/his, except with “you.”. The reason for the different word endings is the various genders of German words; similar to Spanish.
German pronouns are er, sie, and es - he, she, it. Articles are der/die/das instead of just the -- der is masculine, die is feminine or plural, and das is neutral. Unfortunately, as a language where gender plays a big and important role, there is no they as in an alternative to he or she. In German, it only serves as plural and, if used otherwise, doesn't make any sense. There’s many useful websites online that can help you understand those things too.
If German isn't your first language though, don't worry, native speakers will understand! People don't get mad at you for messing up or using the wrong word, German is a very difficult language to learn for non-natives, and trust me, people wanting to learn our language always brings a smile to our faces!)