I am a novice SLR, and want to start with Canon 550D, 18- 135mm lens. I mainly want to ask about accessories.

It's enough for beginners to get started, and then 100 yuan (including online shopping price) can go out with a one-shoulder backpack or wallet. Forget tripod and flash for the time being, let's talk about it in a year or so. Need to prepare an extra battery, the original factory does not need it, just take the product and so on. UV mirrors are usually sold to you when you buy a machine. Just make do with protecting the lens