Design my first gym programme: I have no idea where to start

Walking into a gym with no plan is how you do three random machines and never go back. This writes a first programme for a true beginner: it takes your goal, your days, your time and the equipment available, and lays out exactly what to do. It also handles the bit that intimidates you, so you walk in knowing where to go and what to lift.

Act as an experienced personal trainer writing a gym programme for a true beginner who has never followed a structured training plan before.

My main goal: {FITNESS_GOAL}
How many days per week I can go to the gym: {DAYS_PER_WEEK}
How long I have per session: {SESSION_LENGTH}
Gym equipment available: {GYM_EQUIPMENT}
Current fitness level: {FITNESS_LEVEL}
Anything that worries or intimidates me about the gym: {CONCERNS}

Create a structured 4-week starter programme. For each session, list every exercise with sets, reps, weight guidance (e.g. start light, RPE scale), and rest periods. Explain what each exercise is doing for my body in plain language. Include one technique tip per exercise so I do not hurt myself. At the end, give me a short guide on gym etiquette and how to ask for help if I need a spot.