Very Basic 555 Timer oscillator not working

I've been trying to make an LED blink. My first approaches were without the 555 timer, and they were unsuccessful. I decided to make an Astable multivibrator circuit. I'm using an NE555, and I'm using the circuit on this video. For R1, I used a 680ohm resistor, and for R2 I've used 1k, 10k, 100k, 500k, 1M ohm resistors, and none of them have proven succesful. For my capacitor, I'm using a 100uF capacitor. I've tried 1uF and 1000uF aswell. Please help!