The most "bang for your buck" will come from the "big 4" basic barbell exercises -- the bench press, overhead press, squat, and deadlift (or variants of them). I'd recommend you focus your initial training on getting technique down on those first and focus on progression on those 4 exercises. This isn't to say that cable exercises are BAD -- there are many useful exercises you can do with a cable machine. However, cable exercises are generally best used as supplements to your "big 4" exercises.
"Generally people can't squat because they're lacking in the 'lower ab' area. As in they need to grow a set." - LtL
"No one ever got big or strong by lifting lightweights" - Carl1174
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Valentin Konstantin Platz