Just this morning I woke up and thought to myself "Fuck it, I'm getting into hiking/camping" and then I run into this great new thread. Any advice for a beginner, or some online resources any of you may like are welcome.
My best advice is start cheap and simple. If you have friends that go ask if you can join for the next day or weekend trip. As far as getting shape(if you need to) don't go nuts like you are training for MMA. Just walk/run on a treadmill for some good distances and you will be fine. If you think you'll do trails that go up and down use the stair-master, you'll look gay at a gym but it's the perfect workout for lots of uphill hiking. If you start getting into it more you can look into more advanced training but basically you just don't want your legs/lungs to be shit slowing down the group.
If you do not have friends my best recommendation would be to join the group for your area. So many people are looking for similar minded friends. Some quick ones:
-REI: they have classes(mostly lame BUT some are ok and they are a great way to meet people). They also do group trips and stuff that are not classes but help get people together.
-Look for the hiking forum/group in your area of the country/world. For instance new england has the Appalachian club, think the NW has a few different ones...I never joined anything in the NW because I was already well into it and I do mostly solo with my dog, but he passed so now I'm starting to look for friends again.
-Don't buy more than you need or better than you need off the bat. It's so easy to view it all like toys and drop like 5,000$ day one on awesome gear. Don't. Start with a simple day pack, no sleeping gear at all such as a bag or tent. Do some day hikes with that. If you are still enjoying it look into a sleeping bag and tent that is good enough for your area. Don't buy something bombshell for that dream hike you are constantly thinking of, buy that stuff WHEN you go...or rent it if you think you'll only go once.
Get hiking poles, there are some cool scientific type books out there but it can increase stamina and longevity by 15-20% plus they come in handy for other things like poking your buddy in the ass when you are hiking behind him.
Also get a decent pair of shoes/boots. What kind you get should depend on your comfort level and the area you'll be hiking the most. Obviously in the NW you want something pretty waterproof. Not so much if you live in Utah. Please for the love of god wear them on a bunch of 1-2 hour walks or something a few times a week before you actually go somewhere. Don't be the guy wearing brand new boots with blisters all over your feet.
The only thing I recommend spending some money on is a backpack. I suppose for a day pack holding water, first aid, maybe a lunch and sweater you can use almost any pack. But when you are doing a 7+ day hike carrying all your own shit you'll want something that feels comfortable, carries weight well in the right places, and is rugged.