Most of us don't have what people would consider the best, but there aren't many bad dslr's these days. Lenses make a huge difference, but even they aren't the biggest factor. The most important component is the photographer... and lots of practice. But practice is the fun part.
Regarding Lightroom. It is a steep learning curve, especially when you're new at the whole thing. Best advice I have, is Google Lightroom (5? Which ever version you have) tutorials. You can find YouTube videos. You can also Google a specific task, like "fix blurry photos in Lightroom (3, 4, 5?)". Some sites have instructions, some have videos. If you go to Adobe's website, you should find some tutorials there.
I have most of my pictures backed up on portable hard drive. I use Flickr for photos I want to share with people, but they offer enough storage now that you could use it as backup. And you can set privacy settings to say who can see your pictures, and whether you allow people to download the full size image. There are other sites out there. I honestly don't know which is best though.
Hope some of this helps.
