Welcome to the forum, Tony. It's a great resource.
Your first step should be to read all of the FAQs here on the forum and then to read all of the "stickies" in the main forum and all of the sub-sections. It may seem like a lot of reading but they're hands-down the best resource on the internet, in my opinion. They'll cover all of the basics and give you a solid idea of what you need to provide as far as lighting, CO2 and fertilization go.
Once you have a feel for those basics, then it'll be a lot easier for you to know which specific concerns you have and which questions you need to ask.
It can seem confusing in the beginning but once you have the basics down, it's easy from that point!