Good deal. Welcome to the forum
For someone just starting out, I have three main recommendations. Others will be able to chime in with more too, but I think these should get you going in the right direction.
1) Play frequently - at the early stages of development, you can make huge strides simply by playing games with no extra studying required. Play on chess.com as much as you can and after each game, take a few minutes to look over it and see if there are any moves you can find that you or your opponent missed during the game.
2) Study tactics -Tactics in chess refers to forcing moves that win something (usually material) with the use of a combination of some kind. There are several different tactical themes, and I'd recommend reading a book to familiarize yourself with those. This link has some good intro material.
http://www.chesstactics.org/
And this website is great for practicing tactics. If you do just 15 mins of these problems daily, I promise your game will improve drastically.
http://chesstempo.com/
3) Last but certainly not least, before you make your move, ask yourself "If I put this piece on this square, can my opponent capture it?" That will save you tons and tons of blunders at your level. Do that before every move and you'll improve drastically, and soon enough it'll become ingrained in your memory.
Hope that helps a bit to get you going in the right direction. If you ever have a question, just ask, there are some very strong players here that are extremely helpful.