Help: New to SW

[Beano1169]

Hi I'm new to the salt water game, I have experiance with Fresh but I have become bored and want to start something new and exciting.
I have some knowledge and research on Sw tanks and are I am continuing to expand on that. It is possible that I will be obtaining a 40g tank drilled in both back corners with overflows. I may also be getting a 29g which i will turn into a sump from some DIY vids. In the mean time I have a 15g non drilled, T8 lighting Fw tank taht i might try to start a Nano in, any suggestions on how to go about converting this tank into SW. And if anyone is selling parts for a 40g SW setup I would like to hear from you on that matter. Thanks for your time.