So I started working out to build mucles

Great nutrition and enough sleeping are just as important as the quality of your training.
Never work out longer than 90 minutes. That would induce katabolic processes
On monday I train my chest and triceps, tuesday upper back and biceps, wednesday legs only, thursday mostly abs and shoulders, friday is a bit all around. Saturday I have a break...
I do some cardio training after every workout because it would take half an hour of jogging to start burning fat if I did the jogging before a workout.

I think you'd make more progression if you could follow some regular bodybuilders in the gym. So did I and I have made a lot of adaptations in my schedule.
About proteins and most other supplements... I used to take them with milk. But now that I want to get rid of the thin layer of body fat above my abs I avoid the milk and take my proteins with water.
I have a good breakfast and many small meals every day but I avoid eating before bed time because most of that will get stored as body fat at night.

The fat burning has been a major topic in my gym during the last week. When I mentioned that as my new goal next to gaining upper body muscle volume, it took only a few days before some bodybuilders offered me to do cycles with fat burning steroids like clenbuterol and winstrol. Of course I refused, but now I know where their 8 packs of abs come from.
If you want to do it all naturally like me, your nutrition is the number 1 priority