Over many years of owning and using knives and being no where near a knife shop. I have found the best way to find a knife is to find one you like and research the knife and company. There are many videos on various knives out there and many excellent posts on this site as well. There isn't really a teir system, mostly its just a cost thing but even that doesn't define if the knife is truly great or not. Most good knife companies have good warranties and will back their products. Some are better than others.
For Folding knives I like are Benchmade, Spyderco, and some ZT knives. Victorinox makes the Swiss army knives.
All of these companies have various levels of knives from mid range cost to super expensive.
In conclusion I would say find a knife company that is reputable and makes good quality knives and do research on a particular model. Then see if you can look at them in person or order it from a retailer with a good return policy so if the knife doesn't feel right in your hand you can return it. Ultimately a knife should be something you like and something you can afford. If you are new to knives start with knife steels that are easier to sharpen and take care of until you get good at sharpening. Then you can move into the more difficult to sharpen steels.
Good luck and have fun.
For Folding knives I like are Benchmade, Spyderco, and some ZT knives. Victorinox makes the Swiss army knives.
All of these companies have various levels of knives from mid range cost to super expensive.
In conclusion I would say find a knife company that is reputable and makes good quality knives and do research on a particular model. Then see if you can look at them in person or order it from a retailer with a good return policy so if the knife doesn't feel right in your hand you can return it. Ultimately a knife should be something you like and something you can afford. If you are new to knives start with knife steels that are easier to sharpen and take care of until you get good at sharpening. Then you can move into the more difficult to sharpen steels.
Good luck and have fun.