If you’ve bought a DSLR (digital SLR) hoping to take almost professional-looking pictures indoors, you’re halfway there. Just remember NOT to use the built-in flash that comes with your DSLR.
You might have also heard that a speedlight (external flash unit) will improve your pictures dramatically. Again, you’re halfway there.
The other half of the story is how you use these tools. They are not miracle machines, because you need to be able to use them correctly to get professional-looking results.