But I Don't Know What To Do Exactly!

There is a SLEW of resources out there claiming to be the definitively, positively, best workout routine to get a complete six-pack, get huge arms, pecs, lats, delts, or become a literal professional bodybuilder in seven, fourteen, or whatever days. The reality is, the actual impact of the content of routines dwarfs in comparison to the impact of being consistent and lifting properly and correctly, with intent. The most important things about a workout routine are that you can stick to it, that it works with your schedule, and evenly distributes and balances all muscle groups. Feel free to adapt existing routines or try out your friends' routines. Just be sure to always have one.

Some Common and Well-Proven Workout Routines

Push/Pull/Legs

Weekday	Muscle Group
Monday	Push
Tuesday	Pull
Wednesday	Legs
Thursday	Push
Friday	Pull
Saturday	Legs
Sunday	Rest

The Arnold Split

Weekday	Muscle Group
Monday	Chest + Back
Tuesday	Shoulders + Arms
Wednesday	Legs
Thursday	Chest + Back
Friday	Shoulders + Arms
Saturday	Legs
Sunday	Rest

The Bro Split

Weekday	Muscle Group
Monday	Chest
Tuesday	Back
Wednesday	Shoulders
Thursday	Arms
Friday	Legs
Saturday	Rest
Sunday	Rest

Upper/Lower

Weekday	Muscle Group
Monday	Upper
Tuesday	Lower
Wednesday	Rest
Thursday	Upper
Friday	Lower
Saturday	Rest
Sunday	Rest

Full-Body

Weekday	Muscle Group
Monday	Full Body
Tuesday	Rest
Wednesday	Full Body
Thursday	Rest
Friday	Full Body
Saturday	Rest
Sunday	Rest

Example Exercises for Each Muscle Group

Muscle Group	Example Exercise
Compound Push	Bench Press, Weighted Dips, Push-Ups, Shoulder Press
Pecs	Chest Flies
Front Delts	Front Raises
Side Delts	Lat Raises
Triceps	Skull Crushers, Tricep Pulldowns
Compound Pull	Rows, Pull-Ups, Lat Pulldowns, Face Pulls
Lats	Pretty Much Anything Compound Above
Traps	Weighted Shrugs
Rear Delts	Reverse Delt Flies
Biceps	Bicep Curls, Preacher Curls
Compound Legs	Squats, Deadlifts, Leg Press, Bulgarian Split Squats
Glutes	Hip Thrusts
Quads	Leg Extensions
Hamstrings	Leg Curls
Calves	Calve Raises