Unless you are doing it as a business, then it should be fun.
Sometimes coming to sites like this can be intimidating for newer or lower budget collectors, as people are showing off or talking about these great items they own or bought. This site is more focused on the vintage cards, so I assume most members are older and have collected since the early 70s or before or are those with a decent amount of disposable income. Hopefully everyone gets something from the site, such as knowledge, connections or something else useful.
Everyone just needs to buy/trade for what they like and can afford and not worry about how you stack up to everyone else. That is what the PSA site is apparently for!