What exactly is your problem with the pictures? If you can add one you can add 2 or 10 too or?
Save the code of a picture if you use it frequently and if you forgot to add a picture start a new post, add the picture copy the code and past it into the earlier file (that is how I do it at WEKU)
A gif can't be really different from it, youtube is even easier. Might be it's easier to see if you use steemit.com (if I remember it well there is a tips/tricks link somewhere.
What is that water drinking about? Detoxing or?
If it comes to writing faster using your smartphone I can advice you to speak instead of typing. There are plenty of app available and als Google is an option. I use it in Dutch, did not discover yet how to use it in English as well.

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