I am also a beginner, so my advice probably isn’t worth much.
I just look through the Writers Market web site, divide potential markets into folders.
Keep your initial potential markets small, so as not to get overwhelmed.
I have seen some markets that might be interested in what you write. You just have to search the markets, bookmark the ones that seem most likely. And start with the smaller ones first to get published.
Keep up with the new markets, sorting them into appropriate folders. I am starting out with the small ezines that don’t pay much, but offer help to new writers and a better chance at getting published. in writing, like any other field, I think you have to start at the bottom and work your way up.
I think you need to focus on one item at a time, finish an article or story, find an appropriate market and submit. Set up a timeframe to do one a week, month, whatever fits your schedule. The key is to focus on one thing at a time. Complete it, submit it and move on. Before you know it, you will have a dozen or more works in play, with more in process.
On Writers Market you can keep track of submissions, to whom it was made, and the date it becomes inactive so you know when to resubmit it somewhere else.