I have read most of the old testament yes. I am presuming you are referring to following the law?
Picking and choosing scripture has nothing to do with following the law or not following the law. Christ is the fullfilment of the law, thus all the rules and regulations are not needed to be followed, where is the nt quote, from paul i think that says 'if someone allows him to be circumcised, then christ is of no value to him'
I would follow the law, if the scripture commanded me to, however it doesn't as jesus is the fulfilment of it.
Or are you referring to other parts of the old testament?