If you search "Sun Salutation A" on YouTube, you will find lots of videos that explain this sequence.
The basic Sun Salutation A does not include the tuck handstand (poses #4 and #11) or the push-up (poses #8 & #9), but these are often included in more advanced versions of the sequence.
The standard Sun Salutation A includes poses: 1, 2, 3, 5, 6, 7, 10, 12, 13, 14. Any video purporting to teach Sun Salutation A should include those poses at a minimum. Instructors who like to include the full push-up include Patrick Beach and Carling Harps. (I'm sure there are others. But those are two who I know of.) Any instructors who you find who also have a lot of videos demonstrating handstands are more likely to include a handstand in their sun salutation practice. (Kino MacGregor, Dylan Werner, and Briohny Smyth are a few inversion-lovers who I know of.) But yoga videos on YouTube tend to be more focused towards beginners, and you're not likely to find the handstand included in videos for beginners.
Briohny has an excellent breakdown of Sun Salutation A for beginners on Alo. You can find that here:
https://wellnessclub.aloyoga.com/series/beginner-power-vinyasa/workouts/10686
(One needs to sign up for a membership to view most videos on the Alo site. But it's free these days.)
As this video is for beginners, Bri goes into great detail on the alignment of all the basic poses and also gives options for some easier versions of the standard poses. (e.g.: knees down planks and 4-limbed staff, etc.) She does demo the tuck handstand at the very end, although she does not provide instructions for how to get into it in this video.
Here is a more advanced video (also led by Bri) which includes drills specifically for adding the tuck handstand to a Sun Salutation A sequence:
https://wellnessclub.aloyoga.com/series/learn-to-handstand/workouts/12292
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