Welcome to indietalk.
For all those people who find it more convenient to bother you with their question rather than to Google it for themselves.
lmgtfy.com
This will get you started. There are some good links there about what
a manager does, too. I think this one is really helpful:
Creative Screenwriting Magazine spoke with manager Andrew Kersey who represents screenwriters. He shares his insights into how screenwriters should deal with representation and prepare for a successful career in screenwriting. When should unrepresented screenwriters look for representation...
creativescreenwriting.com
Whether you’re overwhelmed by choices, or you’re just not quite sure what direction to take, when it comes to choosing...
thescriptlab.com