as far as the hoses..
1 from gas tank (fitting at bottom of tank near your crotch) is the vent hose. it runs to the middle of the bike, then down and ends in free air at or below frame level.
2 coolant reservoir hose. one goes to the thermostat housing up under the right front neck cover (over flow line just like on a car), other goes to below frame level as an overflow/vent for the reservoir
3 from front of bike, there will be one from right front 'ear' (air filter housing) to the 2 carb vent lines that T together. also, there is one from the bottom of the airbox at front of bike that is the drain for condensation or oil vapor condensation and just goes down low on bike.
ONLY ones that have connection to anything on the bike are the one from thermostat housing to reservoir, and the carb vent line.