Everyone starts somewhere, and the fact that you have taken the time to look around and do some reading and research for yourself is commendable.
You couldn't find a "conclusion to what does what and what works for fat loss and muscle building" because there is NO "one size fits all" approach. Whilst you can use something as a baseline to work from, you need to experiment to find out what your body responds best to is the best way to do it. So, start off with a "base" nutrition plan and training programme and adjust it weekly based on your results from that week, so that you get and continue making progress.
If you want fat loss concurrent with muscle gain, this is known as recomping, and generally only achieved by experienced trainees who know how to perfectly manipulate their nutrition and training for it. Recomping is also sometimes achieved by beginners, albeit UNconsciously, simply because they are doing something new. Note that as a beginner, results will occur quickly for a few weeks for you with fat loss or muscle gain (whatever you decide to focus on), simply because you are starting training and making changes to your nutrition.
Since you're new to all of this and want to make lifestyle changes more towards fat loss, I recommend downloading and reading The 3 Keys to Fat Loss - it contains comprehensive advice and information on nutrition, supplementation (only the basic staples required), and training for effective and successful fat loss, including a sample training programme for the beginner (and experienced trainee).
Since you ARE a beginner, the best investment you can make, IMO, is to get yourself a trainer who can and will individualize nutrition and training specifically for YOU for your goals and needs. If you can't afford a professional trainer, then continue to research and look around, because there is a TON of information on training for fat loss and/or recomp!
All the best