there are other notes to watch out too like hammer ons and such which that could be your case it could either be a harmonic but mostly guitar tabs have an "H" meaning hammer-on it has like a 4-h5 so have finger on 4th fret and hammer the 5th fret meaning keep index finger on 4 and when you pluck the string "hammer/ hard tap" your middle finger onto the 5th fret
heres a site to help you
http://www.start-playing-guitar.com/guitar-tab.html
oh and heres my current guitar, they dont make it no mo
