If you are a complete beginner, buy the cheapest set of flexible shaft clubs you can find. If you know people at a club or range, ask if any beginners are upgrading to a new set and if they are selling their old set.
No point wasting money on anything half-decent until you get to a point when they are holding you back, and that'll be quite some way off as a beginner.
I'm an eternal beginner and still have a mix of a cheap set I started with. Have mixed and matched with better clubs over time (some to help me, some due to frustration

), but the majority are still a cheap set.