phototexas

Maybe someone can help me out. I am almost completely computer illiterate and since they have changed Word Press on me I am unable to do the things I used to.
For instance………when I posted a photo that had a caption or explanation of some kind I would change the lettering to “white” so it stood out against the dark background of my blog. Now, I am totally unable to find the color control panel to do that.
Also, after I would type my caption and change it to white, I would leave the cursor in place right behing the last letter and when I added the “media” or photo, it would fall into place under the caption. Now when I add the photo it covers the caption.
What gives here?