Personally for me. I stopped being a 'beginner' when i dropped a lot of coin on a Hybrid and started commuting to work on the busy roads of London.
I had a few forays into the world of cycling on public roads with the rest of traffic with the guidance of a friend of mine but getting a new job pretty much put an end to that. my Bike stayed indoors though and i occasionally took it out for a little weekend trip around the marshes.
The bike was some £300 Apollo MTB which i completely regret buying, It was heavy, it was cumbersome and the gears jumped randomly and chain would slip on the teeth of the cassette which would make a loud crunching or grinding noise as the chain attempted to bite in a get some grip. I took the bike around to
Halfords multiple times, even took it around to Evanscycles to get a second opinion and both of them told me it was what it was and you get what you paid for.
I didnt feel safe taking the bike on the road with it so it was pretty much confined to the darkest corners of the garden shed where it still is today.
I wanted to sell it and get some money back but mum put an end to that idea saying that she would like to ride it. She took it out 2 or 3 times during the summer for a short ride with a friend and thats it - back in the shed it goes for another year.
People were calling me silly for paying £80 for a pair of proper cycling shoes so i can clip into my pedals with. Buying and wearing 'cycling clothing' instead of just any random pair of shorts,T-shirt or jacket. more than £80 on lights, almost £200 (if not over) on luggage systems such as a carrier, trunk bags and panniers.
I am no means an expert or even an amature for that matter, None of the things i have makes me a good, amature or pro-cyclist. But Cycling should be fun, and I have set myself up in the way where I have half decent equipment to go out there and have fun rather than leaving me with a negative experience and making me wanting to toss the bike in the shed with the other one.
Am I a beginner? Yes, very much so. but through cyclechat and also buying my new bike I have slowly started to take off the blindfold and learn about all things cycle related.
Right now Im dipping my feet into bike components/upgrades and learning about wheels, chainsets, groupsets, shifters and the like. Because one day in the future i would like to upgrade my bike. When i finally complete that goal I will be able to say that I am an amature cyclist. Pro is when i drop money on carbons and do all my own maintenance