This is one of those knitting tasks that most people hate, as evidenced by the growing popularity of top-down, knit-all-in-one-piece sweater patterns out there. No finishing! No seams!
Where's the fun in THAT, I ask? Hand sewing seams is one of those things that is easy to do once you learn to do it properly. It also provides some structure to your sweater, especially if it is knit in a heavy wool yarn. And if you have the right tools, it's a snap. Those clip things do wonders to get things lined up and hold it all together while you are sewing. The brand name of these is Knit Klips, by Susan Bates, you can find them in many knitting and craft shops.
Here's my favorite book for instructions as to how to do a variety of seams.
The other handy tool is a perfect sewing needle.
Mine is a sterling silver handmade needle from Celtic Swan.
It's hard to get a good photo of that, here's another one.
And yes, since you are wondering, I do have a couple sets of the sock needles in silver as well. I covet everything in her shop. And she is local, from nearby Lopez Island.
Back to sewing!