So the easiest thing to do would be a full-body workout three days a week.
My favorite beginner's workout is:
A: Deadlift, Overhead press, Chinup
B: Squat, Bench press, bent-over row.
Just alternate workout A and B. Stick to the basic pattern, switch some exercises every few weeks, change the rep pattern. Will get you far. But first: Try this religiously for 6 weeks. Even with something as simple as 3 sets of 10 reps. No cheating, no changing, no breaks.
Meanwhile, read up which exercises you could substitute, what set- and rep-schemes you might want to use... and even if some completely different system might be interesting.
Don't worry. Just eat the right stuff and enough of it. Eat lean meat, not too many carbs and enough servings of fruits per day. Don't try to get it perfect the first try, make small changes over the months.