One advantage of a money system compared to a barter system is that

Ease of finding items

Explanation:

With bartering (trading) you may have to wait until the you find what you need and someone who needs what you have (example: I will trade horseback riding lessons for a car and they may not NEED or WANT riding lessons) - with money, you can just purchase what you need when you need it.

what following?

explanation:

there are many ways of getting involved on your local party. attached you will find the brochure that describes some ideas: go ahead and visit your local hq, become a volunteer on your comnunity or struggle up for your own ideas so you can make them real.