Practice counting out the rhythm: 1-and-2-and-3-and-4-and.
Rotate between the D and F#m for four measures to play the intro.
Start the verse by continuing the D-F#m-D-F#m pattern.
Change to the Bm next, followed with G for two counts then A for two counts. Return to the Bm and finish the guitar chord progression on the A.
Continue the verse by playing the D-F#m-D-F#m pattern then the Bm-G-A-Bm-A chord progression in Step 4.
Return to the D to start the chorus in a similar fashion as the intro, but with the Bm: D-Bm-D-Bm. Play this twice, then play a four count D chord and you have the interlude between the first and second verse.
Repeat Steps 3 through 6 and get to the bridge. The bridge is G-A-D-Bm (four counts each). Play this through twice. On your third time around, omit the D and extend the Bm to eight counts, followed by the A for eight counts.
Play the third verse a little differently than the first two. Start with the D-F#m-D-F#m, but then play Bm-G-A guitar chord progression three times. On your fourth time through, play Bm then the A for eight counts.
Close the song out with a four-count D chord then a D guitar strum.