Can u pls tell me the plan how to learn dot net completely

Maintain one good notebook for each Concept, if you referring from either C# Corner or YouTube, write down whatever you learn from it. Once you understood the concept write it down with examples, Once it's done try to practice this.

For indepth knowledge, try reading article or blogs from C# Corner, this community authors explains each and every concept in a detailed manner.

If you want to learn dotnet from scratch its better to join some Institute, otherwise if you are planning to learn on your own then try to take the sample or detail pamphlet from the good Institute and you can get each topic from either C# CORNER or any other community For clarity of your concept watch kudvenkat videos on C# which will be available on YouTube.