I recently played the piano(just for pleasure) but my curiosity influences me to learn music theory. Then I got bored and try to play some songs(anime ops) but I can’t play it but I can read the music sheet letters one by one which is a horrible thing. I don’t want to use synthesia because I believe that when learning music, comprehending and reading it is the best way.
Yousician offers free and premium access. Free subscriber lesson length is limited but can be up to 10 minutes for a session.
I have used this app (the free version). 10 minutes per day. works pretty well. I don’t work for them, and I’m not trying to sell. Just my personal experience. You can change the interface from bars to notes. Either way, it is laid out on what looks like sheet music.
I rarely sight read anything these days, the best tip I can give you is to practice reading ahead of what you are playing. Depending on the speed of the piece you should be reading at least 3-4 notes ahead of what your hands are doing.
Two things I keep in mind is to start as slow as possible, if you think you’re playing slow enough, go even slower! Just like learning to read words, you’ll eventually be able to do it faster and faster. The other thing to keep in mind is that if you make a mistake don’t stop to correct correct yourself, carry on regardless. Hope that helps