Reddit mentions of GP601 - Piano Repertoire - Baroque & Classical - Level 1

Whoa, I started with those exact 3 songs when I started learning the piano almost 10 years ago! Anyway, I suggest you start with this book to learn some fundamental music theory. I like this book because it has multiple scales and lists the chords and arpeggios for each key signature and goes through the circle of 5ths. You don't necessarily have to go through this book in order, just make sure you follow the fingering patterns carefully and play the scales, chord progressions and arpeggios slowly so you can internalize them and familiarize yourself with the layout of the keyboard.

If you'd like to become a proficient sight-reader (which I highly recommend, being good at sight-reading will help you in the long run), start practicing with reading some simple pieces. Go through the Alfred's book and see how well you can read through those pieces on the first run. If you feel like you need more sight-reading practice, the Mikrokosmos books will provide you with plenty of material to sight read. I also like this book of hymns. Remember, if you can't play it nearly perfectly (at least in terms of getting the notes right) on the first run, it probably means you should work on reading through that piece. So keep practicing!

If you have the money, you might be interested in investing in this series of books. Each level contains Baroque, Classical and Romantic pieces, as well as etudes and music theory, which really helps with building up a well-rounded foundation. But then again, the best use of your money would be ideally spent on a good teacher.

If you'd like a song at a similar level to what you're currently learning, I also learned this version of Canon, Ballade Pour Adeline, A Thousand Miles (because it's a fun piece and why not :)), and Summer by Joe Hisaishi during my early piano years.

But to be honest, I don't recommend learning any of the pieces I just listed above, because they will take you too long to learn. In the same amount of time you spend learning those songs, you could be progressing much faster if you focused on learning fundamentals and picked much easier pieces. And I mean pieces as simple as Minuet in G major and Minuet in G minor, maybe even simpler.

I feel obligated to write all of this since you're starting from a similar place that I was when I first began learning piano. Jumping into pieces that sound beautiful or amazing isn't the most efficient method of learning. Take this from me who went from being fixated on learning the entire Fur Elise → River Flows in You → Canon in D → Rondo Alla Turca and other songs wayyyyy beyond my level, to dropping all of it in and just starting from the very basics because I realized I sounded like utter ****, even if I could play the notes and it sounded fine to my family/friends who didn't play piano. I also wasn't making much progress in terms of learning, since each new piece would take me foreverrrr to actually learn. Building up your fundamentals is the way to go, because once you get to the level where you can actually play those beautiful pieces, the learning process will be so much faster. I know starting from the bottom and working your way up can be a slow and sometimes even tedious process, especially when you have to go through all these pieces that seem really easy or boring, but trust me, it will be worth it and far more rewarding in the end. :)