Here we use an actual guitar slide - a glass or metal tube slotted over the 2nd finger.

Everything here is played using a slide. The notes are from the good old E minor pentatonic scale. Be aware that the riff starts out with an upstroke. Also when using a slide, you don't push down the string onto the fretboard! Only use the lightest pressure and rest the slide on the string as you slide.

You need to slide over the fretwire to get the true note for that fret. For example, if you want the E note on the high E string at the 12th fret, you need to slide to just over the fretwire (between 12th / 13th frets) to get that note. If you think about why - it makes sense, because whenever you actually fret a note, it is actually playing from the fretwire position anyway. When sliding we can have the slide anywhere on the string, which is great for having slight 'off' notes etc, but it also means if you want a 'true' note, you'll need to slide to just over the fretwire.

Bear this in mind when watching the ActionTab - slide to the fretwire positions, rather than the middle of the frets!