I started shooting last year. I have a .308 ruger hawkeye with a leupold VXIII 1.5x5 scope and a lanber 12g shotty.
I haven't had alot of opportunity to use the Ruger yet but if i was about to buy a new gun again i would get a 6.5x55 rather than the .308. Reason for this is that the 6.5 has the same ammount (or more?) punch than the .308 but has a smaller projectile which i think makes it a more versatile round and can be used on bigger game, makes less of a mess on small game and even though neither of them kick much the 6.5 has less recoil. I would also go for either open sights or get a red dot scope (which isn't really a scope but anyway) because you will develop a better reaction shot. Also spend the time zeroing your gun in at a distance that you think you will do most of your shooting, i still haven't done this because i don't have access to a range and it is not good for your confidence. I also reccomend wearing ear plugs when you take your shots, at best without them you get a bad headache at worst you develop a massive flinch which (i know from experience) are very difficult to lose. But there is alot more to choosing a weapon than just looking at the round, the weight of the gun, size of the barrel, action etc etc etc are all very important.
I would reccomend being very very picky about who you go shooting with. I've had one mate decide it was ok to shoot over my shoulder, which scared the bejeezuz out of me and made me deaf in that ear for the rest of the day. I haven't been shooting with him since. I have another mate who i was once goose shooting with, we were standing about 20m apart and hadn't got anything that whole trip when a goose literally flew straight between us neither of us even flinched to shoot it because it wasn't safe. That is the kind of person who it is safe to shoot with.
Don't feel like you are less of a man for going for a larger calibre rifle than you might need. Just because it is possible to kill a buffalo with a .222 doesn't mean you have a good enough shot to do it. It is better to go a bit over and be certain of an instant kill than it is to make an animal suffer. Last night i made a decision to shoot a stray dog that decided it lived at my house, she was a sweet little dog but had no owner and was making my dog sick. I used a .308 round right in the top of her skull. The round did so much damage that it blew her bottom jaw off and butterflied the remains of her head so that from cheek to cheek her head was literally flat. I felt and still feel like a word that i can't say here and the mess almost made me feel ill but i know that she did not suffer. And that is the most important thing.
Wow this post has turned out massive. Just one last piece of advice. You can buy some very good second hand guns and if you are strapped for cash i think it's the way to go. You can get a good 6.5x55 Mauser rifle for less than $400 which means you'll have more money to buy your safe and more guns!!!