In main multiplayer menu, loading screens and all other waiting time, there should be tips for new players, like:
"shield wall is good formation to save your troops from arrows, but don't work well in close combat (capitan mode)", "Axes and maces deals better with armored enemies then swords", "teamwork is a way to victory", "troops of player that was kicked during a match will automatically charge (capitan mode)" "team with fewer members with receive more soldiers (capitan mode)" and so on. Now you must learn all of this by watching it happens in battlefield or hearing it from someone. It will be good that you can spot 100% proved information like this in game
"shield wall is good formation to save your troops from arrows, but don't work well in close combat (capitan mode)", "Axes and maces deals better with armored enemies then swords", "teamwork is a way to victory", "troops of player that was kicked during a match will automatically charge (capitan mode)" "team with fewer members with receive more soldiers (capitan mode)" and so on. Now you must learn all of this by watching it happens in battlefield or hearing it from someone. It will be good that you can spot 100% proved information like this in game