what specifically do you need tips with? if you're on the app, once you upload a picture, you can press and hold when a picture is open and it should come up with some options. "share photo" gives you the direct image URL you need to embed images here, at least on android. will upload and grab a pic to show if you want?
ok, some pics to show what i mean: holding and pressing gives me these options, share photo gives you the direct url (for this picture it's
https://66.media.tumblr.com/3e2bb450cb7986dda9c777951309b983/tumblr_poiaj60HyX1r2hwbn_1280.jpg)
the little paper airplane icon on the bottom gives you similar options, but it copies the post link, not the image URL
if it prompts you on what to share with, it's just "copy to clipboard" or a similar link
then you can embed the image e.g.
visitors can't see pics , please
register or
loginnot sure what it's like on iOS, but you should be able to open the blog in a browser and copy the link from there worst case scenario?