Using the Tangle Jr. is super easy! Just start twisting and turning it in your hands. It's great for when you're bored, need to focus, or just want to have some fun. You can connect multiple Tangle Jrs. with your friends' ones to create bigger and more interesting shapes. When it comes to colors, keep in mind that they might be different from what you see in the picture. As for the size, it's 1.5' x 2' x 1.5' when coiled and can stretch out to 7' when you uncoil it. To maintain your Tangle Jr., just keep it clean and away from sharp objects that could damage the 1' curved sections. If you order a pack of assorted colors, you'll get one of each available color, and a box will give you a full case. Have a great time playing with your Tangle Jr.!