Question: How many bonus tracks are on the CD of How to Save a Life?
About the article "How to Save a Life", section "Track listing".

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The band was not sure how to release so much material, initially opposing suggestions of a double album citing both cost and a potential overload of too much music.
They indicated a likely plan to release a normal-length album, and save other songs for future shorter EP releases.
The band, however, ultimately settled on a 13-track physical album, with a second physical album entitled "Barenaked Ladies Are Men".
The latter album was originally pre-released exclusively in Canadian Starbucks locations on October 3, 2006.
This version of "Are Men" contained 12 of the remaining tracks, plus "Are Me"'s two singles.
The four songs not included on either of those releases were deemed as digital-download "bonus tracks" and it was implied that they were not going to be made available physically.
This was consistent with the "Deluxe Edition" of the "Are Me" album, which compiled the 25 tracks into a two-disc package that excluded the "bonus tracks".
However, when "Are Men" officially received widespread release on February 6, 2007, it contained all 16 tracks not on "Are Me", including the "bonus tracks"; This tracklist was not announced until shortly before "Are Men"'s release.
A bonus "All New Revue" CD was offered to fans if they preordered the "Are Me" album.
The CD contained the same 13 songs as the basic "Are Me" album performed live and acoustic at the Glenn Gould Theatre in Toronto.
A 5.1 surround sound deluxe edition of all 29 songs was released in the US on December 12, 2006, and alongside "Are Men" in Canada on February 6, 2007.
Fans were offered several additional format and content options for purchasing the "Are Me" session material.
The following is a list of all release versions of the "Are Me" sessions material: 
 Deluxe Edition: "Heartless" – 4:16 (First time on CD) (Kanye West cover) "Never Say Never" – 4:21 (Live with the London Quartet) "You Found Me" – 4:05 (Live with the London Quartet) "Where the Story Ends" – 3:20 (Piano Version) "Fair Fight" – 3:08 (Live) "Be The One" – 3:30 (New song demo) "Uncertainty" – 3:16 "How To Save A Life" – 4:58 (Live from Webster Hall) iTunes Bonus Tracks: "Fair Fight" – 2:45 (Slade) Deluxe edition iTunes bonus tracks: "Where the Story Ends" (Piano Version) "Absolute" (Acoustic Version) "You Found Me" (Acoustic Version) "Fair Fight" "Uncertainty" Pre-order iTunes bonus track (for both iTunes editions): Track listing.
"Enough for Now" (Acoustic Version) Bonus DVD: "You Found Me" (Video) "You Found Me" (Making the Video) "Making the Album"(Video)  
In later editions, an extra track was added:
<li value=13>"Unsaid" – 3:05
Bonus CD:
<li value=14>"Over My Head (Cable Car)" (Live at the Gothic (05.20.2005))
"How to Save a Life" (Live for MTV.com & VH1.com (07.14.2005))
"Look After You" (Live at Red Rocks (08.12.2005))
"Heaven Forbid" (Live at Red Rocks (08.12.2005))
Bonus DVD:
How to Save a Life (The Story)
On The Road 2006 (Documentary)
"Over My Head (Cable Car)" (Music Video)
"Over My Head (Cable Car)" (Making the video)
Purchasers of the Gold Package of the game were given (among other things) a CD soundtrack, titled The Soundtrack of Half-Life 2, containing nearly all the music from the game, along with three bonus tracks.
This CD was available for separate purchase via the Valve online store.
Tracks 15, 16, 18 and 42 are bonus tracks that are exclusive to the CD soundtrack.
Many of the tracks were retitled and carried over from the "Half-Life" soundtrack; The names in parentheses are the original titles.
Tracks 34, 41, and 42 are remixes.
All listed tracks were composed by Kelly Bailey. 
The E.U.
Edition of the "Bachelor No.
2" CD on V2 Records has a rearranged track listing that removes "Driving Sideways" and adds a new track "Backfire".
The Japanese bonus tracks are included.
"How Am I Different" – 5:03  "Nothing Is Good Enough" – 3:10  "Red Vines" – 3:44  "The Fall of the World's Own Optimist" – 3:06  "Satellite" – 4:10  "Deathly" – 5:37  "Ghost World" – 3:30  "Calling It Quits" – 4:09  "Susan" – 3:51  "Backfire" – 3:25  "It Takes All Kinds" – 4:06  "Save Me" – 4:35  "Just Like Anyone" – 1:22  "You Do" – 3:43  "Save Me" (Video)