except that in english we do not the masculine, feminine and nuetral forms of words like german does which is what speaking it properly involves

it's very easy to speak it without paying attention to those details, and you will easily be understood (and be able to understand) without knowing which should be used.

for example: 'eine kleine scheisse katze' could easily be said 'ein klein scheiss katze' and people would know what you meant, but it would easily give you away as not being a native speaker (which could have got Michel Thomas and many others killed during the war )