& Welcome.
Get some plants! they help keep the aquarium in balance and also look nice. They also help to stop algae establishing. Some good easy to grow plants are Java Fern, Java Moss, Ambulia, Most crypt Species and Amazon Swords. Because your starting out i would recommend fish such as tetras, Corys, Bristle Nose Catfish. Then maybe one you have had these for a while the you could stick a Dwarf Cichlid such as Kribs, or Aspitos.