Where to start? Want to learn more about others with similar symptoms? We can do that! Want advice on how to cope? We can do that! Want to know what's normal and abnormal? We might be able to do that!

For places to start, I tend to recommend picking up at least one book on SPD and reading it. There's a few options; I personally loved Sensational Kids for this sort. The Out of Sync Child is a popular one too for this initial book. Dan might have recommendations for others you might want to look at. I get the autism and the SPD books confused so don't remember which is which, because I sort them together mentally and on my kindle.

If you want advice on coping in any particular area, then just go ahead and mention the area, and at least one person (probably including me, because I spend too much time on forums answering questions about sensory stuff ) will answer with ways to help deal probably.

If you want people to talk to, there's a chatroom. There's generally at least a few of us adults with SPD in there, and we talk SPD and non-SPD things. And things that are both at the same time, like me obsessing about cats and dogs.

Oh, right, I read again and you say you don't know where to start with coping skills. I still say all I said, but then also have more to say.

You likely have realized what with being diagnosed, but there's occupational therapy. It is incredibly useful. That's definitely a place to look.

Another thing though, is looking at, what sorts of things sensory-wise help you feel better? Is it a hug? is it climbing in the cabinets? Is it looking at a fire? Figure those out. That's an important question.

What sorts of sensory issues do you have?

What sorts of things do you want coping skills for?

You say you have issues with bright lights, that's an area you can look into adaptions in, is lights and vision. I wear blue glasses, have known preferences for what types of lighting I prefer, and am not afraid of wearing blinders on my glasses (those are some of my ways to cope with vision problems).