Hi Hitesh,

To learn online PCM, you are required to be have high concentration powers as not to get distracted.

I am mentioning the name of some best youtube channels you could refer to:-

• ARVIND ARORA - Made Ejee Chemistry for CHEMISTRY.
• Mathongo by Anup Sir - for MATHEMATICS
• Pradip Kshetrapal for PHYSICS
• Also check out Apni Kaksh channel.

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!