If you're serious about making it a hobby and you want manual control, get a decent DSLR now and don't throw away money on a digicrap (or point and shoot camera as they're called by the politically correct and marketeers) that you'll get disappointed with after a few months and relegate to the function of doorstop.
A highend P&S (what you'd want) will cost you the same as or more than a lowend DSLR.
And while you'll grow out of that too, it'll take a lot longer
Start looking at something like the Nikon D40 (or if your budget allows it the D80) or their Canon equivalents, the 400D (or maybe 450D by now) and 40D.
The kitlenses you get with them aren't the greatest, but will serve you well while you're learning the ropes and provide valuable insight into what highend lenses you may want in the future at a very reasonable price.
Nikon's my personal brand of choice, mainly because of their to me superior exterior design and build quality, which to me means better ergonomics and userfriendliness.
But unless and until you've actually handled cameras and lenses of both brands you can't tell for yourself.
One word of advise: never listen to camera salesmen unless you can detect the cowdung coming your way. Most are no more trustworthy than used car salesmen, and will push you towards the purchase that to them means the highest profit margin whether it's the best equipment for your purposes or not.
And don't buy camera equipment online, at least not until you have a firm understanding of what it is exactly that you want without having to visit a store.
NEVER go into stores to check out the goods and then go online to buy it at a lower price. That's very bad manners, drives stores to massive expense for no return on investment and eventually drives them out of business (and you will want them to get service and advise, two things you will never get from an online store).
And if you do buy online, remember the old addage: if it sounds too good to be true it is. This is especially true for stores located in Brooklyn, NY (there are more scam camera stores situated there per block than anywhere else in the known world), but certainly not limited to them.