Chains do get tangled up. But if it got tangled on the bike then you can untangle it without having to "break" the chain. Patiently work the chain in different directions and you will see it begins to straighten out. I bet you can do this yourself as well and how proud you will be when you do it. Try to remember what the chain should look like untangled and keep that it mind as you work on it. If need be, look at some pictures of chains on the web, look at chains on bikes in a store, or check out a bike book from your library. BTW, don't over-oil or grease your chain. That makes for a real mess and in reality very little is needed. When you start to hear some squeaking put one drop of bike oil on each link, rotate a few times and wipe off the excess with an old rag. You could be a "budding" mechanic.
14 years bike mechanic for a non-profit and many more years of riding bikes.