Metronome Online - Free metronome to help keep a steady beat while practicing
Online Tuner - Free tuner
Free tuner apps: insTuner Free, Free Chromatic Tuner, Pitch - Chromatic Tuner
Free Live Streamed Classical Music Concerts - Several of the great symphonies around the world have made their present and past performances available online. Enjoy listening to great works of music at home!
Musictheory.net - great lessons and games for all levels of music knowledge!
Finale Notepad - free music notation software
Who to follow on Instagram/YouTube:
Classic FM
Chicago Symphony Orchestra
Piano Guys
Itzhak Perlman (violinist)
Yo-Yo Ma (cellist)
Gautier Capucon (cellist)
Renaud Capucon (violinist)
Joshua Bell (violinist)
Drew Alexander Forde (violist)
Gary Karr (bassist) - not on Insta, look for his awesome videos on YouTube!
Esperanza Spalding (bassist)