I’m new to Twitter. How do I find someone if I only have their name? Thank you.
See the link -
Finding people on Twitter
Also,Makeuseof has a guide on Twitter so that it can be much helpful to get started quickly -
Use the search box on top.
you can find user name in twitter search.for example, if your are searching for @mumtobeorganic then simply type in twitter search bar mumtobeorganic you will find result for that user.