You'll love the progressive lenses. I've been wearing them for quite awhile. You can see at ANY distance. You just have to remember to point your nose at what you're looking at. You'll get used to doing that.
Some people get a little woozy when they move their head from side to side, but I never did. Also, going down stairs can be dangerous the first few times so make sure someone is with you at first. It might look "different" and you might misstep. So be careful. The same holds true when walking off the curb.
The middle of the lens is for the computer. You just raise or lower your head til you find what's clear. The bottom is for reading a book.
I love mine and I'd NEVER go back to the bifocals/trifocals with the lines. My sunglasses have bifocals cause it's cheaper, but I don't like them as much.
Good luck with your new glasses! I'm sure you'll love them. I used to be an optician, so I worked with them alot. Take care. Hugs, Lee