As I mentioned earlier, safety first. Finding a mentor, as mentioned by Doyle, is also great advice.
Careful about your selection of caliber in all three categories. For someone with no experience in firearms, going straight to a larger caliber can be a real shocker. Easy to develop bad habits/flinching, etc.
Start out reasonable and work your way up as you get experience and find a desire for something bigger.
My .270 has a fair amount less pop than a .30-06, and it'll wear me out after a box of shells at the range.
I can't tell you how many guys I know that shoot .30-06 and up when hunting and they only have to fire the thing a couple times a season, but when they go to the range it's .223, .243, 6mm, etc. All that recoil simply isn't that fun for most people.
You mentioned hogs earlier. .243 is a great round for that, and deer as well. Proper shot placement is more important than a bigger hole in most cases.