M19/5’11/133->155lbs// 1st year of lifting

I’ve always been super skinny so I talked to some of my friends that work out and they made me a 4 day a week split which is what I started out with. Push Pull Legs and an Auxiliary day. I now do 5 days a week which is Upper Lower Push Pull Legs. I tracked my calories from day 1 but didnt start taking eating seriously until a few months ago. My goal was to eat 3000 a day which I now know is my maintenance so Ive been eating 3500 for the past couple months and started seeing better progress. Can’t wait for year 2.