Can you build muscle with resistance bands alone?

Yes, up to a point. Bands produce real mechanical tension, and tension is what drives hypertrophy. The limit is loading the largest muscles — legs and back — where the strongest bands eventually stop being challenging. Most people reach that point after several months, not weeks.

Adjustable or fixed dumbbells?

Adjustable if you have less than a square metre to spare or are training alone at home, since one pair replaces a rack. Fixed if you train fast, change weight between sets often, or share the equipment.

How heavy should my first dumbbells be?

Pick a weight you can press overhead for 10 clean reps with 2 left in the tank. For most beginners that is 10–20lb per hand for upper body. If you buy adjustables, the useful range for a first set is roughly 5–50lb per hand.

Do resistance bands snap?

Latex bands degrade with UV light, heat and abrasion. Store them out of sunlight, keep them off rough concrete, and replace any band with visible nicks, cracks or cloudy patches. Never stretch a band toward your face.

How long should a jump rope be?

Stand on the middle of the rope; the handles should reach roughly to your armpits. Most adults land between 9ft and 10ft. Adjustable ropes are worth it if more than one person uses them.