Just purchased a Ladies Schwinn "Sanctuaray" crauiser (I think It's a cruiser). Can't lower the seat. HELP!!!

Doesn't sound like a shop that knows what they are doing, or they just didn't want to work on your bike. If the brake lever is broken, why didn't they try to sell you a new one? If your brakes are obsolete, why didn't they try to sell you a new brake system? Bicycle brakes are not rocket science, take it to a different shop fir a new quote, or get a book on how to repair bikes and do it yourself.

Here's a PDF owners manual for Cruisers...
http://control3.net/owners-manual-for-cruiser-bicycles-download-w582.pdf

needs new wire and adjusted. see repair shop

Enter that directly into a search engine (even mispelled) and answers will appear.

You COULD look in the lame manual provided by Schwinn at http://www.schwinnbikes.com/support/owners-manuals, which you should own anyway as it may answer some future questions, or you COULD jump on a search engine with "assemble bicycle saddle" and find instant video help.

They don't break out garden variety bikes. As a bike is just a static frame with a bunch of aftermarket stuff thrown on it, generic manuals work well. Try one that fits, say, where it was bought.

Use a Search Engine for specific questions like adjusting brakes or shifting and you will find many videos.

I always start here...

http://www.parktool.com/blog/repair-help

The tires will say on the side-wall, it's likely around 45-50psi.

It sounds like the bike you bought was too big for you. Your only option here is to replace the seatpost with one that does not have this feature. You can pick up a seatpost at a bicycle shop and they should install it for you, too, if they are a good shop.

Hope this helps a little,
matt

I guess put it in the right position, mark it , & drill a new hole.

Did you swap front & back fenders?

wd-40 works wonders!