As a beginner there is no problem with using cheaper hooks of any kind that you can find. As you get in to tying you will find that some fly tying hooks are very specialized. Some hooks are made for specific flies and to get the best results you wouldn't tie it on just any hook. You may need a fine wire hook or a special very short extra heavy hook and so on. So for now tie on any hook that you have. Later on you may want to switch to better hooks. Most fly tying hooks are tempered and not just soft wire.
Another option is to buy some hooks from Allen Fly Fishing
. His hooks are good hooks at prices you can't beat even if you buy cheap hooks someplace else.