Sales resources & Training
If you've decided to freelance your own network and make your own advertising sales, then you'll need some materials to start with until you're proficient enough to do it yourself naturally. This can be seen as the most difficult portion of launching your own network.
Pitching / Scripts
More Weblinks & Resources
Cold Calls: I went from nothing to 120k/year solo using this process. Script included. AMA
Study / Resources
Oren Klaff
Jordan Belfort
Zig Ziglar