I'm a lifelong snorkeller, starting back in the early 1960s. One of my favourite books is Peter Small's "Your Guide to Underwater Adventure", which first appeared in 1957. Here's a "plate" from the volume, captioned, as you can see, "If underwater swimming is not fun, it's not anything":
Peter Small's philosophy of underwater swimming is essentially mine too. Enjoyment is the key. I find snorkelling immensely relaxing. It transports me away from all the trials and tribulations of the day. It matters little whether the body of water where I am swimming has shoals of colourful fish, rare marine plants or interesting minerals to explore, but if it does, so much the better. For me, snorkelling isn't about trying to beat the latest world record in breath-hold depth or duration. I'll leave that to the freedivers who cannot live their lives, including their spare time, without competing with themselves or their fellow freedivers.
As for snorkelling equipment, I strongly believe in keeping things simple. Do read the excellent "editorial" on the Snorkeling Forum at
Snorkeling Forum - What is Essential for Snorkelers? Editorial by Joel Simon
It really puts into perspective how "less is more" when it comes to purchasing gear. If you ask a scuba diver what fins to buy, it's likely you'll be told how indispensable open-heel fins with booties are. Ask a freediver, and you'll hear how full-foot fins with long fibreglass-reinforced blades are essential. The trouble here is that both the scuba diver and the freediver think that your dalliance with snorkelling will be brief and that you'll want to graduate to something "more challenging", such as scuba diving or freediving, when you've "seen the light".
Snorkelling is a wonderful pursuit in its own right and you can enjoy it at whatever pace you want. There is no need to buy expensive gear. What matters most is that the gear fits you and not somebody else. When purchasing fins, go to the dive store with an open mind, which means forgetting about brands. Focus instead on finding a pair of fins that not only match your shoe size, but also accommodate the breadth of your feet and the height of your arches. Fins that are too loose will either generate blisters through rubbing or fall off. Fins that are too tight will causing cramping. Take the time to locate fins that fit your foot dimensions. If you intend snorkelling in colder waters, consider purchasing neoprene socks or booties and wear them when you are checking out your fins for size. Contrary to popular belief, you can wear either full-foot or open-heel fins with socks or booties, so long as you try everything on for size at the time of purchase.
As for a mask, there are plenty of threads in the fins, mask and snorkel forum describing how to check whether a mask fits your face or not. One method is to apply the mask to your face without attaching the strap and breathe in through the nose to create a partial vacuum. If the mask remains on the face without support, you probably have a reasonable fit. As with the fins, though, you won't know for certain until you've tried the mask on in the water and experienced what it's like to swim around wearing the gear.
In the case of snorkels, try a simple J-shaped tube. There's less to go wrong than with gadget-enhanced breathing tubes.
You've noticed I haven't told you what kind of gear I've used when snorkelling. That's because the fins, mask and snorkel I use all fit my dimensions and suit my swimming style, not yours, so beware of anybody telling you that such-and-such a brand of fins, mask and snorkel is the solution to all your snorkelling problems. Finding the right kit is something of an odyssey and it's a journey that nobody can do for you. The best way your friends can help you is by lending you items of their own snorkelling gear so that you can find out more about what is available.
Finally, the matter of snorkelling locations. Many people contemplating snorkelling believe that you have to go to a tropical paradise if you want to snorkel. Far be it from me to deter you from seeking out such destinations, but believe me you can snorkel often just as well in your own "backyard". I snorkel most weekends in the sea off the coast of the North East of England. The sandy beaches are far better than the pebbly affairs I put up with on expensive trips to Mediterranean resorts back in the 1970s. The American pioneers of skin diving started mostly in Southern California, where they also lived and worked.
Hope the above hasn't put you off. Another of my favourite books is entitled "The Joy of Snorkelling" and that's what snorkelling should be all about. Welcome to a great aquatic pursuit!