Hi Sam.
One of our Player Reps put together a series of posts as reference material for those learning the game. A one-stop shop should be helpful for your situation.
Even if you only have an hour or two a couple times a week, you can read a bit and practice. The quickest improvement will probably come in the form of learning table position and deciding on a range of hands you want to play at each position. Also, keep in mind that a bet or raise is typically a stronger move than simply calling.
If you can put a few hours of dedication per week to practice the above, you will be shocked at how much better you play.