As far as the basics, check out the
how-to-brew website. Most of the info you need will be in there. I'll caution you that some of it is a little outdated since that's the first edition, but most of it still applies. You could also purchase a newer version online or at a local homebrew store, if there's one in the area. You can also find a bunch on info here on HBT. For starters, I'd go to the
HBT wiki for any particulars you have questions about.
The actual step-by-steps depend on how you want to make the beer. The easiest method, and the method that most people start out with, is an extract kit. In this case, the grains have already been mashed and the resulting wort (sugars) concentrated into either a thick liquid or powder. This extract is mixed with water and boiled for 60 minutes with a variety of hop additions giving bitterness and hop flavor. After 60 minutes everything is cooled and transferred to a sanitized vessel (bucket or carboy) and yeast is added. The yeast will consume the sugars in the boiled wort, producing CO2 and alcohol. After the yeast have fermented out all the sugar they are going to ferment, the beer can either be bottled or moved to a secondary for aging (as is the case for lagers).
Of course, the above is very simplified, and there are a ton more details to figure out along the way. I'll agree that especially for a first batch, I'd look into buying a kit. If you've got a local homebrew store, head down there and talk to the guys or gals behind the counter. Assuming they're a decent store, they'll be able to answer a bunch of your questions for you and get you set up. If you don't have a homebrew store, there are a bunch of places online that have pretty nice kits. Austin homebrew, Northern Brewer, Midwest Homebrewing, and Morebeer are a few to take a look at.
Based on what you've mentioned you're looking for, I've got a few suggestions. First, I should warn you that light beers are notoriously hard to make, especially light lagers. Because there aren't a ton of hops or dark malts in them, any slight flaw winds up getting magnified. Not to dissuade you, just want to temper your potential expectations. I personally started out with very hoppy IPAs and dark stouts to avoid that

. Second, figure out if you really want to start with a lager or not. Lagers will take quite a bit longer than ales, and come with a whole host of problems. While you've got a fridge for lagering, you'll have to get a controller so that the beer can be kept at lager fermenting temps (50 degrees or so). Ales tend to finish faster (can bottle 3 weeks after boil-day for a lot of beers), and can be fermented closer to room temp (60-65 is best). There are plenty of lighter lager kits out there, but if you decide to do ales look for a cream ale kit. You can also do a what's called a California common, where you ferment at ale temps with a particular lager yeast.
Either way, I'd start doing some research, figure out what you want to do, and get a plan of attack. Definitely brew with friends as well! Also, welcome to the hobby and HBT!