Pros/Cons quick list
MasterClass — Lang Lang: Pros — unparalleled musical insight; great for phrasing and artistry. Cons — not drill-focused; subscription required.
Flowkey: Pros — excellent song library, intuitive interface, listening feedback. Cons — audio detection can struggle on acoustic pianos.
Skoove: Pros — structured lessons and adaptive feedback; good starter curriculum. Cons — limited nuance in tone/expressivity feedback.
Playground Sessions: Pros — gamified, motivational, strong pop song library. Cons — more oriented to pop/jazz; classical learners need supplementary practice.
Udemy: Pros — cheap, lifetime access, diverse instructors. Cons — inconsistent quality; vet before buying.
Skillshare: Pros — many micro-lessons, community feedback. Cons — not a complete beginner curriculum by itself.
Coursera: Pros — conservatory-level technique modules; academic rigor. Cons — less focus on popular repertoire.
Final recommendation (practical)
If you can afford a subscription and want fast, visible progress: subscribe to Flowkey or Playground Sessions (or try Skoove’s trial) and practice daily. If you want to internalize musicality and interpretation later, watch Lang Lang on MasterClass and apply his phrasing approach to the songs you practice. For long-term reference, buy a well-reviewed Udemy course during a sale and keep it as your “paper-back” method manual.