Summarize the following:
The base of the capo is the part that makes contact with the strings on your guitar. You have a few options for the base depending on what office supplies you have lying around. You can use a highlighter, pen, marker, or pencil.  The important thing to consider about the base of your capo is that it is long enough to cover the width of the fretboard. If you have a short pencil or another shorter base, test it by comparing its length to the width of the fretboard. You also have a few options with connecting the base of the capo to the guitar. The important part about the tying component is that it has enough pressure to hold the strings. You can either use a strong elastic band like a hair tie or rubber band, or you can use a piece of string.  If you use an elastic band, test it to make sure it is strong enough to hold the base against the strings. Test the elastic band by stretching the band. You don’t need to stretch it too far, but make sure it doesn’t break on an initial test. Tune up your guitar before attaching the capo. You can either tune to standard tuning (EADGBE) or tune to an alternative tuning. Use a chromatic tuner for the most effective tuning.

Summary:
Get the base. Find a tying device. Set up your guitar.