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Tips are a bit hard without knowing your environement, animals near you, budget, and shooting skills.
So far I'd say avoid milsurp shit Especially for a hunting gun. A Mosin is cheap, but its overkill for most game and heavier than dedicated hunting lever or bolt guns. .22lr, .17hmr, or .22magnum are good choices for a hunting gun. You might not be able to kill deer often, but a couple rabbits can feed you for a week. Avoid magazine feed rimfires. The most durable .22lr I know is the Marlin 60, best .22mag is the Henry pump or goldenboy.
For the pistol go with either 9mm, .45acp, or .357 magnum. The hick towns near your mountian or whatever will only really have that. I can give a few models to look at depending on the purpose of the pistol.
Some people will tell you to buy a shotgun and a spare barrel. I will say just buy another shotgun if you want both a short amd long shotgun. Barrels are the most expensive part of a shotgun. You can buy an old police 870 or 500 for the cost of a new hunting barrel. 20guage is easier on the shoulder if you aren't very strong or don't shoot much and can be shot on target faster if you're strong and shoot a lot.
Depending on what you hunt, your semi auto rifle can be your hunting rifle. Especially if you hunt things like hogs or or rabbts that like to be in groups or that states don't regulate mag size or bag limits. An AR 15 in .300blk (its the best medium game round but hard to find. Not an issue if you handload) are great hunting guns that can keep off animals killing your crops or rapist hillbillies.