LED lights help!

[Epictantrum]

Hi, I need to get LED light strips to fit into a shower niche. Does anyone know what I need to buy to go with them? A transformer (and are the cheapish amazon ones OK)? Wires? It seems fiendishly complicated and I can't find a beginner's guide on the internet anywhere. Any advice would be gratefully received.

They will need to be rated to be able to be underwater if you want them in a shower. Not sure I have seen strip LEDs which are ok for this but you could try looking at ones designed to go under the water in spa baths?