Hmm, ok so:
Lightsabers: you need either a dumbbell with removable weights on it, or something around the same length weighted at one end (a heavy maracca type thing). kneeling down in front of a bench or stable chair, put your arm (bent at the elbow) straight in front of you, with your forearm resting along the bench surface and your hand and wrist hanging over the other side. Hold the weight at the unweighted end (like holding a lollypop) and without moving your arm, turn your wrist from side to side, making an arc with the weight. Go slowly, to help with control you can hold your elbow down with the other hand). Make 'vzeewww' sounds.
Tricep kickbacks are fairly well known I think? If not let me know and I'll explain. Just make sure that you pause when your arm is almost fully extended, then extend, concentrating into the muscle. This will stop the cheatery that happens when I see people just swinging this exercise around. Slow and controlled!
Angel curls: using two dumbbells, stand neutral with arms by your side. Bring the weights up into a hammer curl, making sure to keep your elbows glued to your side. Then for the downward movement, arc your arms out to the side (like angel wings), extending as low as you can, bring them back up along the same arc (again keeping your elbows in, no swinging around), then hammer curl down. This is one rep.
Hope this helps, let me know if I can help with more explanation :)