I would only reccomend meditation that uses pure nature, no imagination, no foreign objects. Yoga asanas, anapana, Sattipithana, or just mindfullness.
An orientation toward virtuous and compassionate behavior is an important foundation. Not because some beings say we must obey, nothing to do with it. It is because we start to understand, through contemplation and observation that particular energies from certain behaviors and Kamma(actions) cause agitation in ourselves and environment around us. You can make your own moral code adding and subtracting if you are honest with yourself.
Awareness of the breath body, sitting still, feel the whole body as you breathe in, as you breathe out.
Eat mindfully without distractions. Sit and feel the texture movement, ¿flavour? The arm shoveling.
Get the Sattipithana, but get the version written. By Buddha.
I reccomend keeping the contemplation to a minimum and meditate more. Like two wings of a plane, theory and practice. Better to not get too much of one without the other. Or there will be ...trouble?