Warriors gain one proficiency point every three levels. You start off with 4*, and gain 1* at level 3, 6, 9, 12, etc... ...
Warriors gain an additional 1/2 attack per round at level 7 and 13.
Bard Songs
Page 13 of the HoW .pdf file for more details)
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Level 01: The Ballads of Three Heroes
Level 03: The Tale of Curran Strongheart
Level 05: Tymora's Melody
Level 07: The Song of Kaudies
Level 09: The Siren's Yearning
Level 11: War Chant of Sith
Druid's Elemental Forms Page 11 of the HoW .pdf file for more details)
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Level 11: Fire Elemental
Level 13: Earth Elemental
Level 15: Water Elemental