The Helpful Actor
An insightful list of helps to the professional as well as aspiring actors will be found here. First of all there is a world of material found on the internet.
So let us say you are new to Hollywood or New York not knowing where to begin.
Start looking at your own local listings for theaters or workshops and local community colleges theater department. There you may be overwhelmed with banners to schools abroad for training from which to choose! By this at least you are getting used to how listings are presented to your eyes in advertising. Any kind of experience at the local level is helpful. [There are some professional actors in every major city of the world].
Even once you go abroad to study at some famous university, even if it is for a short length of time, going the local level doesn't make you a washed up guy or gal. You know you want to do this so just pursue it.
Back to resource material. Check out the local college and public library. Though I prefer to locate Barnes & Noble or Border's Books which has a large selection of Theatrical training references aside from plays.
In Hollywood there is Samuel French Bookstore, supremely the 'actor's university bookstore'!
That is the best spot to go, with two locations: one on Sunset (Hollywood), the other on Ventura Boulevard (Studio City). There you have a resource that answers all the professional and aspiring actor's needs.
Here is the general list.
Once you go to it look for The Hollywood Reporter, Variety, Backstage West/East for starters as well as The Ross Reports. Hubs such as Boston and Chicago have newsstands that carry those trade papers.
If you are SAG or AFTRA you can click on Arlin Miller's site.