Need Resources to learn, to sketch

Hi Gurus,

I am new to product design and I need your valuable inputs for sketching.
I learned Solidworks software. I want to design a product, the idea is fresh in my head but as I am not familiar with
sketching I am not being able to put it on the paper. I need to learn sketching techniques from the beginning.

Would you guys please suggest a good book, a Youtube Channel or a website for a person like me to learn sketching.
I would really appreciate your help.

Thank you.

Regards,
Shaunak Deo

Tutorial links

Book links

More Books

Sketching by Eissen

Rapid Viz

I found Scott Robertson’s videos a great resource:

Also, Spencer Nugent over at http://www.idsketching.com/

And a few others…

http://mastersofchickenscratch.com/category/improve-your-sketches/

Thank You Guys for the valuable inputs…

These two are quite nice as well

http://www.idsketching.com/

I also found Drawing Index Page to be extremely helpful as I am new to this as well.

Peace