RAM can be bought from a company which advertises in a computer magazine or a good local computer retailer. RAM speed is measured in nanoseconds. Most RAM is 70 nanoseconds. Everyone seems to have a computer-whiz friend who would just love to help out. This route may save a little money, but be careful.
Some people only talk a good game.
Having the job done at a computer store may save you money in the long run. It is easy to find out. On the ninth line down, a number appears which spells out precisely how many 'bytes available on disk'. If under 10,000,000, clean up the disk and make some room. Take a deep breath, exhale slowly and carefully delete files.