>>11275687
Real butts feel and look better than fake ones IMO
>>11276260
No reason working out wouldn't work if you're skinny. You just need to eat a little more calories (100-200 calories above what you burn based on basal metabolic rate and activity level) and protein (1-1.5 g per kg of your bodyweight)
Evidence for treatments to increase fat remains to be seen

The basics of working out:
- a rep is the movement of the workout (eg 1 rep of bicep curls is lifting the dumbbell up and down)
- a set is the amount of reps you do in a row before having a short rest (usually rests are about 1-2 minute, unless you're doing things super sets where you do a different workout or drop sets where you lower the weight)

- sets should be done to failure, as in until you can't lift the weight again with the proper form (you can stop 1 rep before failure for lower rep sets)
- 5-30 rep sets can increase muscle size, but lower rep sets will build more strength ie actual muscle fibers
- 10-15 sets for a muscle per week (for beginner)
- 3-10 sets for a muscle in a single day for most effective growth stimulation
- a good workout should have full range of motion, and there is evidence to suggest workouts that fully lengthen a muscle while under load will grow more of the muscle (meaning shortened training will only grow the upper part of the muscle which can be useful for targeting certain parts, like hip thrusts for a rounder butt)

There are a lot decent workouts you can do with just bodyweight. With resistance bands and/or a variable dumbbell or two you can pretty much train any muscle you want