There is a difference in conversational styles. Males are competitive and "I can top that" is a common mode of communication. Be careful not to get caught in an exaggeration! Males develop a "pecking order" in groups with one dominant person who leads the activity. The dominant person may change if the activity or composition of the group changes. When in doubt, it's better to be a follower than a leader.
When walking go straight in the direction you intend. If you encounter another person intersecting your path the person who yields is usually the smaller of the two. The exception is women who are sometimes given deferential treatment.
When arriving at a door at the same time as another man, the one closest to the handle opens the door and passes through. Men do not generally hold doors for each other unless they are holding the door for a group walking together. If a gentleman arrives at a door at the same time or slightly ahead of a woman he will hold the door and allow her to enter ahead of him. If the door opens inward he will pass through the door and then hold it for the woman. If the woman is accompanied by others the man will hold the door for the entire group. The technical exception to this door rule is elevators, where etiquette requires that the man enters the elevator first.
When walking or driving you are allowed to look around! Men avoid eye contact with other men unless they are conversing directly. If you do inadvertently make eye contact simply nod slightly and look away. Don't smile.
Persephone's restroom etiquette video was hilarious but has a lot of truth in it. The key is space, you want to be as far away from other restroom occupants as possible while still achieving your goal. Talking is, of course, verboten. Men tend to be very brief in their use of the sink (if they use it at all).
