Just one guy's opinion, but I'd avoid anything that says magnum especially if you are new.
This is true not only for beginners but for 99.9% of most hunting and most shooters. The 06 and .270 or both good choices if you must go with long action calibers but the .308 will do most of what the bigger cartriges will, with less recoil and on a short action to boot. It's also a good cartrige to reload for having tons of bullet choices. It's also commercially available everywhere. As far as optics go just don't give in to the tempatation to cheap out. Buy quality optics and you will be happy.