Ok, so if you do this:
-- type text
-- Path menu > Object to Path
-- ungroup
-- Path menu > Combine
It's the same thing as this
-- type text
-- Path menu > Union
Yes, it's true that when you click on Path menu > Object to Path, nothing appears to have happened. But something has indeed happened. Try this, and you'll see what happens.
-- type text
-- switch to the Node tool (
)
-- notice how the text looks
-- Path menu > Object to path
-- notice how the text looks now
Those tiny gray diamonds and squares are the nodes.
When you first type the text, it's not a path. Object to path makes it into a path. However, Object to path makes each letter a path, and they are all in a Group. That's why you have to Ungroup and Combine, to make the whole word into a single path. However, as I mentioned, Path menu > Union is a shortcut to all that. So if Path menu > Combine is causing a crash for some reason, using Union will avoid using Combine.
Note that Union and Combine are not the same thing. But they often achieve the same results.
You didn't mention in your original message which tutorial you were following. You also didn't mention what your final goal is.
If all you want to do it move the text, you don't need to do anything more. Just type it, switch to the Selection tool (
), and move it. But I'm guessing you have another goal, or else you wouldn't be converting it to a path.