If you spend $8-900 on the rifle, does that mean you won't be able to by a scope and scope mounts? If that's the case, and the rifle you buy doesn't come with iron sights, you'll have the rifle but you won't be able to shoot it effectively. Frequently new shooters get caught up in purchasing a rifle without considering the ancillary items they'll need to shoot it and maintain it like a scope, mounts, case, sling, cleaning supplies and so on. You can get a low priced decent quality scope, and mount it in Weaver scope mounts, which is what I consider the least expensive option that will provide good results, but rings that tighten on just one side can be tricky to set up since the scope is inclined to roll as the rings are tightened. You have to anticipate the amount of roll, and turn the scope the opposite way slightly before tightening. If you are lucky enough to find a Brno 600 that has the pop-up peep sight, look no further, you might even decide you don't need a scope. If you do decide to scope it, all you need buy are the rings since the bases are milled into the receiver of Brno and CZ bolt actions.
I like the .30/06, in a well stocked 8 pound rifle, it represents what is possibly the most powerful cartridge that a novice can shoot well in a short period of time, but in a light weight rifle, with a plastic stock, firing heavy bullet loads, its unpleasant. Purchase 100 rounds (5 boxes) of Remington Managed Recoil ammunition to get you started. I expect that factory ammo will be shot up fairly quickly if you have easy access to a place to shoot, and that will provide you with a good introduction to the rifle. You now have 100 pieces of brass that you can handload, and the least expensive way to get into handloading is to buy a Lee Loader, a set of Lee's spoon style powder measures, and a copy of Richard Lee's loading manual, "Modern Reloading II". Buy a pound of Hodgdon or IMR 4895 powder, a box of 1000 standard large rifle primers, I like CCI, and a box of 150 gr bullets; 150 gr bullets are ideal for deer sized game. Loaded to 2700 fps, a pound of powder will give you just shy of 160 loads, your brass will last many reloadings, your trajectory will be flat, the impact velocity does not exceed the limits of cup and core bullets, and you may never see the need to load your ammo hotter or with heavier bullets. Steward Edward White took a custom Springfield .30/06 to Africa and used it to take dozens of game animals, some like eland, weighing a ton, only a few few required a follow up shot, over that year long safari. The military 150 gr FMJ load at 2700 fps was all he used, it was also the only .30/06 ammunition that was available in those days. Arguably a cup and core soft point is a better deer bullet than a FMJ, and a TSX of equal weight at the same velocity will penetrate just as deep and straighter on heavier game like bear, moose and elk.
Over time invest in a powder scale, so you are not limited to the graduations of the spoon measures, and an inexpensive press, and purchase a set of .30/06 full length dies, a container of dry neck lube and a container of Imperial sizing wax. If space is tight, your loading press can be mounted on a Work Mate folding bench, otherwise you can build or buy a suitable loading bench. After you've reloaded your brass several times with your Lee Loader, you will probably discover that the rounds gradually become difficult to chamber in your rifle, and the shoulders of your fired brass needs to be set back slightly. This is when the loading press and a full length sizing die comes into play; it allows you to set back the shoulder until the brass chambers easily in your rifle. As your budget allows, you can acquire more reloading tools, for example once your brass exceeds the specified length, it must be trimmed, so a case trimmer will become necessary. You will probably want to invest in a priming tool which will be more convenient and produce more consistent results than seating primers with a stick and a hammer, which is essentially what you do with a Classic Lee Loader.
In addition to full power loads, particularly if purchasing jacketed bullets becomes a strain on the budget, try shooting cast bullets, which cost only a fraction of the cost of jacketed bullets when purchased and almost nothing to cast yourself from scrap lead. Buying cast bullets enables you to shoot affordably without the cost of purchasing the tools you need to do your own casting. Cast bullet loads provide additional advantages, they use small charge of pistol or shotgun powder to propel them, which again makes cast less expensive to shoot, they are an effective on small game load that don't render the meat inedible due to their lower impact velocity, and when loaded to 2000 fps, they duplicate the effectiveness a .30/30 on deer or black bear. Trail Boss seems to be the favorite powder these days for cast bullet shooting, but I use Unique and 2400, now that SR-4759 is no longer manufactured.