Choosing Sewing Scissors: If you're new to the world of sewing then there are a few things you should know before buying your first pair of scissors. Firstly, you have to decide what exactly you're going to be using them for. Scissors are perfect for cutting fabrics, and if you're simply cutting fabric over a tabletop then you'll need slightly smaller scissors with a shorter handle. General-purpose scissors and mini scissors are much better for snipping and cutting smaller items.
Your next consideration is how you're going to hold your sewing scissors - are you going to go for a traditional pair of scissors that have a long-handled design? Or are you going for a pair that has more of an extended design - perhaps one that's like a scissor blade? This way your fingers are positioned higher and more in the line of sight of the blades (which allows you to see exactly where your cutting area is) and it also helps your fingers keep track of the length of the blades and thus cut closer to the edges. There are even some shears available now that are designed specifically for people with limited hand movement so you can easily stitch through your project without having to fully raise and lower your hand. These kinds of advanced models can sometimes be quite expensive so if your budget is tight then you might want to just get a pair of standard scissors.
One last thing you should consider before buying any kind of sewing scissors is whether or not they're going to be used in a professional capacity or not. There are a lot of different kinds of stitches and stitching methods - from flatbed to embroidery. For each of these different techniques, different kinds of material scissors are required. A pair of embroidery scissors will do embroidery work perfectly, but you probably wouldn't want to buy a pair of fabric scissors for that (folded blade) unless you were doing a small embroidery project and only needed a thin pair of blades.
One of the best things you can do is read up on different pairs of sewing machine scissors so you know what's best for what kind of work. The first thing you'll probably want to do is visit your local sewing machine shop and look at the shears they have in stock. These guys will most likely be able to give you some sort of guide on how to go about choosing your new pair of blades. There are basically two main types of blades - straight and folding.
A straight blade is the cheapest and best out of all the kinds of blades out there. This means it's most effective for quickly cutting fabric and getting right into tight areas. It's also less likely to nick your material and leave hair-studded spots on your cutting fabric.
Folding blades, on the other hand, are a little bit more expensive but are usually made of higher quality materials. They're also more comfortable and easier to grip because they have a little bend to them when you hold them the right way. Some models have a really great quality of steel which is great for piercing thick materials and can cut through many pairs of fabric with no problems at all. However, the downside to having a folding shear is that they tend to slide around a lot. You might not be able to get right into a tight spot if you have a pair of these scissors that don't stay put.
If you just need to cut hair, then a pair of regular scissors will probably do the job just fine for you. Of course, there's another consideration with choosing sewing scissors - how often you're going to be using them. For many people, purchasing a couple of extra pairs of cutting knives is a great way to keep their arsenal handy. A pair of shears can cut hair down to about two inches, so if you're only cutting your own hair occasionally, this isn't a big problem. However, for some people who sew a lot, or who sew thick fabrics, having a full set of blades is essential.
For those who find themselves in a situation where they absolutely must have a pair of sewing scissors on hand, there are a few considerations. Of course, if you're left-handed, then you should probably go with the regular (non-folding) blades. But if you're right-handed, don't automatically assume that folding blades are for righties only - you could end up having difficulty finding a pair that feels right for you. Also, keep in mind that if the scissors you buy are of the left-handed variety and are meant to be used on the right-handed person, then it's probably not a good idea to buy a pair that has a "switchblade". These are blades that easily turn off if you happen to switch them, so be sure that they actually work!