What equipment should i buy? (complete beginner)

ok so im 16 and really skinny and of course want to build muscle. i never know when ill be able to go the gym so i cant keep a steady schedule which im guessing is important when working out, so my only choice is to buy the right equipment so i can have it at home and be able to work out whenever i need.

i know absolutely nothing about working out. i want to work out all parts of my body, and need the right equipment to be able to do every exercise that is needed for results so can somebody give me a list (and please be specific) of things i need to be able to do all of the necessary workouts at home? like i said im completely new to this so please be as specific as you can.

Necessary (for starting rippetoes):

Olympic Bar
Bench
Somewhere to squat
however much weight u need


Other:

Power Tower(Dip station, pull up bar, and thing for leg raises)
Dumbbells

damn my mind is failing right now and I cant think

Just get a barbell with weights, power rack, and a bench. Thats all you need

[QUOTE=al_77;340671331]Just get a barbell with weights, power rack, and a bench. Thats all you need[/QUOTE]

this.

Chuck Norris says Total Gym

Best thing to get is a power rack with a FID (Flat-Incline-Decline) bench, a bar, and lots of weights.