Is this statement true....Jewish laws do not offer specific codes of behavior, but are broad general 'suggestions' of how one should ask.
I have been studying Jewish law for over 30 years, and I can state unequivocally that Jewish law mandates many, many specific behaviors.
There are laws about how to pray, how to eat, how to marry, how to divorce, how to celebrate holidays, how to plant crops, how to serve God through animal sacrifice, how to put on one's shoes, how to pay for monetary damages, how to co-exist with neighbors, how to fight wars, how to love God, how to fear God, how to wash one's hands, how to conduct oneself in a lavatory, how to observe the Sabbath, etc., etc., etc.
Still, there are commandments that can be seen as broad suggestions that each person must discover exactly how to put into practice. For example: "Do not hate your brother in your heart (Lev. 19:17) and "Love the convert" (Lev. 19:33) can be practiced in a number of different ways, depending on one's personality and the situation.
Furthermore, Jewish philosophers and commentators have explained that one can--and should--extend the commandments of the Torah by observing not only their "letter," but their spirit.