I have not yet met a beginner that had started with the "perfect pond"...
Hmmm... well I won't say perfect, but we are definitely beginners and we have had zero issues with our pond. We were lucky enough to have the opportunity to meet lots of experienced GARDEN POND owners and did lots and lots of listening and learning before the first shovel ever hit the dirt. (And that GARDEN POND part is important - people need to know what kind of pond they desire to own, as there are definite differences. I know nothing about managing a dedicated koi pond, for example, and wouldn't dream of offering advice to someone who does.)
My husband comes from an aquarium background, so he was very much into water testing in the beginning. But we quickly learned to observe our pond - the water, the plants, and the fish - and believe what we could see with our eyes. Healthy fish and plants are the goal and as long as we achieve and maintain that, we consider ourselves successful.
We were just at one of our favorite garden centers today and I had to shake my head at all the "pond products" on the shelf. It's like modern medicine - every problem has a drug that you can take and every drug leads to another problem... which has another drug that you can take - and so on, forever and ever. Start chasing pond problems with products and you'll be at it forever. The best tool in a new pond owners pocket is patience.