Mountains! Oh my goodness I love photographing mountains because you simply cannot get a bad picture of them and they just go on forever and created beautiful depth.
get your hands on a cheap DSLR to get started (nikon d3100, canon t3 or t3i) you will learn right away that working with interchangeable lenses will change everything. plus, you can learn all about shutter speeds, fstops, etc. but even if you cant get a DSLR right away, just take your camera/phone everywhere and shoot! For editing programs, I use a free online one called pixlr editor, but I have worked with photoshop cs6 series and lightroom. those are top of the line and wonderful!
thank you very much!