Questions to ask yourself:
Are you brewing on a stove or burner inside or using a propane outside? One of your biggest expenses is going to be a kettle, so where you brew is a biggie. Make sure your burner distributes heat evenly to your kettle. I was using a camp stove for a bit. The weight of the liquid was an accident waiting to happen, and I was missing mash temps. I bought a Blichmann Hellfire. It was not cheap, but I love it.
Do you have access to a cheap, used refrigerator or chest cooler? Beer is much better when you have temperature control, and you can plug a refrigerator into a $30 something controller.
What method are you going to use? How much time do you want to spend on a brew day? The quickest are extract and Brew in A Bag. Grain is cheaper to buy than extracts. BIAB will require a bigger kettle than extracts, but you can make much better beer with more choices. You will also want a wort chiller to rapidly cool down boiling liquid.
Are you going to keg or bottle? Kegging makes life easier, but the stuff is about $300 to start. Bottles will take longer and more work, but they are cheaper. Buy decent, thick, brown bottles if that is your choice.
The other stuff is only a couple hundred bucks, and if you have a local homebrew store, you can get a starter kit.
YouTube is a great place to research your brew day and what the various methods look like.
You need a software program. Obviously you found at least one. I would also read John Palmer's book How to Brew.