Adding RAM is easy once you have the case open. Disconnect the SCSI, floppy and power/display cables, and the motherboard slides right out. There will most likely be two 1MB 30 pin SIMMs on the board, which will be waiting to be removed and replaced with two 4MB 30 pin SIMMs, bringing you up to 10 MB.

Good peripherals for a Classic II would be an Apple Extended Keyboard II, StyleWriter II, external Apple CD-ROM drive, anything from around that era.

Software, run System 7.1, ClarisWorks (any version), Word 5.1, and just about anything else you want.