Faithfulness is the first criterion: the target language equivalents must be faithful to the source language words in lexical, syntactic and pragmatic meaning.

There may also be misalignment between words, tone and body language, such as gestural slips, which are physical equivalents of speech errors and indicate internal conflicting thoughts.

This will give you a foundation in the language and help you learn the different parts of speech and their English equivalents. Don't worry about memorizing every single rule.