Installing SSD. Step by step guide available?

Yup, Phillips #00 to take the screws off the bottom and a Torx 6 to take out the screws around the harddrive.

Be sure when you're screwing the case back on, that some of the screws are going in at an angle or else it wont fit right.

And yes, put in the SSD. Boot up your SL disc, use Disk Utility to format the drive, then install SL.

 

here is a good guide

http://lifehacker.com/5541774/how-to-install-a-solid+state-drive-in-your-macbook

 

Wouldn't be surprised if you already have some torx screwdrivers laying around in a set already. Any place that sells computer stuff should have them too, I don't know if a Home Depot would have them since they're more precision tools instead of industrial. I'd try Radio Shack first, then Walmart.

You boot up the disc, and you click up top to access Disk utility. Click your installation drive (the SSD) on the left, and click Erase... from there you just choose it was HFS Journaled and let it do its thing. Close disk utility then proceed to install SL.