speed

 https://www.google.com/search?q=test+speed 

frequency

 https://www.google.com/search?q=test+frequency

Pre & Post

 https://www.google.com/search?q=pre+pro+test

self

 https://www.google.com/search?q=self+test

rapid

https://www.google.com/search?q=rapid+test

magic

https://www.testmagic.com/

guide

https://www.test-guide.com/

Us

https://en.wikipedia.org/wiki/Usability

Sites
https://www.usability.gov/
https://www.usertesting.com/
https://usabilityhub.com/
https://www.userlytics.com/
https://www.userfeel.com/

Tube / Slides
https://www.youtube.com/results?search_query=Usability
https://www.slideshare.net/search/slideshow?searchfrom=header&q=Usability

nts

https://www.nts.com/

Time

https://www.testingtime.com/

ask

https://www.askattest.com/