Christopher (see Comments on the “Conversation” page) suggests that we learn our noun genders: those pesty “der/das/die’s”. Starting tomorrow, I will begin posting a cumulative review of the vocabulary from the Bonhoeffer selections. The first list will be all 150 of the masculine nouns. Other than reciting them aloud, I would suggest composing brief phrases or sentences, using the nouns in various grammatical cases, with the appropriate definite article.
In most of the selections I have not included genitive or plural forms–maybe that will come later. Or you might want to print out the list, then look them up in the dictionary: add the other grammatical forms and additional definitions you think it would be helpful to memorize.
I also agree with Christopher that we should strive to attain as high a conversational level as possible; don’t be satisfied with merely passing an examination.