First Grow - Things to Focus On?

Hi Guys - I'm going to start my first grow relatively soon and I wanted to look at some of the most common issues people experience so that I can be prepared when something (inevitably) goes wrong

From what I can see here, most of the issues are caused by incorrect pH and nutrient levels. Do you guys agree with that? To me it seems that some of the other things you have to worry about are relatively straight forward (lights, temperature, ventilation, etc) but I'm getting a bit overwhelmed reading about all the different things that one has to be aware of when it comes to maintaining proper pH levels and nutrients. Do you guys have any general advice that I should keep in mind? Thanks for your insights!

Welcome to Riu!
I would Keep it small and simple for first grow. A plant doesn't need much to grow successfully. Just the basics. Once you grow a plant or two to harvest then you will have a better understanding if what you are doing... works for you.