About the Windows 7 support expiration.

Thanks for posting this info.
I decided to get a new tower with Windows 10 professional factory installed, it should be here by early next week.
Any other tips on making this transition as easy as it can be?
I am running Windows 7 at the moment, and it was an easy transition from Vista, kinda like a cross between Vista and HP.
What programs specifically will I not be able to use?
Thanks for your time.........