any tips? only played on a harmonium before (that too when i was younger) please
Learn the fretboard first.
Learn to read tablature
Learn basic chords (A D G C E etc)
If you're having trouble committing to practicing and improving, have songs in mind that you want to be able to play
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From a Grade 8+ Guitar player and qualified teacher
Actually a good point about your fingers.
extended sessions will leave you sore afterwards for a while until you develop the calluses that more seasoned players have. If you want to develop them fast get the VariGrip pro from D'adarrio, I literally never put mine down and it helps build finger strength and even has a ridged side simulate the feel of strings and build those calluses faster.
Early stages of playing are all about comfortability though. Get comfortable with the guitar, holding it, moving around the fretboard etc.