Welcome to the boards! As you can see by looking at the threads here, there are always a number of games that people are recruiting for - some large, some small. My personal advice for you is to look for someone running a module or PFS scenario. That second one stands for "Pathfinder Society", and those games are short scenarios instead of longer adventures, making them ideal for helping you get used to the game. You also have the option of playing only by post (which could allow you to just make a post each day and fit into your schedule that way), as opposed to longer sit-down sessions.
If you'd prefer to jump straight into longer adventures, well... as you can see, people recruit for those as well. XD In the end, it is up to you - I totally jumped straight into a longer adventure the first time I started playing, and it worked out well enough. Shorter games are more likely to be completed when you play by post, though, so it's really a bit of a balancing act...
