Below are some very helpful free ebooks and reports, organized by topic area. Those marked with an asterisk (*) require providing some basic contact information in order to download the document.

Successful Strategies for Small Firms (PSMJ)*
Branch Office Optimization (PSMJ)*

Business Development
How Buyers Buy A/E/C Services (Hinge)
What Sales Winners Do Differently (RAIN Group)*
Your Guide to Insight Selling Success (RAIN Group)
Leading Masterful Sales Conversations (RAIN Group)*
5 Keys to Maximizing Existing Account Sales (RAIN Group)
Brand Building Guide for Professional Service Firms (Hinge)
Online Marketing for Professional Services Firms (Hinge)
The Definitive Guide to Engaging Email Marketing (Marketo)*
How Firms Benefit from Visible Experts (Hinge)
Master Facebook Marketing in 10 Days (HubSpot)
Attract Customers with Twitter (HubSpot)

Project Delivery
Guide to Empowering Project Management (PSMJ)*
Avoiding, Managing & Eliminating Scope Creep (PSMJ)*
Simplified Earned Value Management (PSMJ)*