We are the largest publisher of Air Force PFE, USAFSE, SKT self study materials in the world. We also publish Army SMCT Levels 1 – 4 and Navy rate promotional self study materials.

Helping Develop Enlisted Learning (HDEL), Inc. the leader in producing self study materials for Air Force, Army and Navy personnel, has published PFE/USAFSE, Specialty Knowledge Tests (SKT) and other products since 1979. Our Self Study materials, with their uniquely prepared questions are derived directly from their respective sources(s). HDEL Self Study materials have helped Non-Commissioned Oficers (NCOs) and airmen raise PFE/USAFSE scores as much as 80 points, resulting in promotion for many.

Our Self Study materials have helped enlisted members to:

Make Studying Challenging and Enjoyable
Direct you to Important areas of Study
Increase Your Test taking Confidence
Improve Study Skills
Improve Exam Scores
Our Self Study questions were developed solely by HDEL and usage of these materials should increase your knowledge base and chance of scoring well on your exam.

Use of these Study Materials should be viewed as an investment in your future with the Air Force as this Study Material if used properly will increase your scores and chances for a promotion.

HDEL, Inc., is the leader in the production of military educational self study materials. We have published AF PAM 36-2241 self study materials since 1979. HDEL SKT Study Guides have been in use for several decades. Our self study materials, along with specially prepared questions taken from AFPAM 36-2241, have helped NCOs and airmen raise test scores as much as 40 points, resulting in promotion for many military personnel. These self study materials may also be used by Board Members for question selection and by persons preparing to meet various boards (BTZ, Airmen / NCO of the Quarter, Army, Navy, etc).

HDEL offers the best promotional self study products that money can buy (ONLY top quality). Our products listing, available at AAFES and on this website (hdel.com), contains a complete guide for career field “Career Development Courses” or CDCs, PDG self study materials published by HDEL. You can be assured that the products you purchase from HDEL, are based on the latest, most current publications available to us from the CDC. As an educational laboratory and publisher, we are committed to publishing ONLY excellence!

Why do the products from HDEL cost more than some of the other self study materials on the market ?

We have established, that when you purchase an HDEL software CDROM self study product, you are purchasing the most current material based on the arduous research of technical writers. Each software CDROM purchase includes a FREE (otherwise sold at $38.95) printed Flip Thru Review (FTR) . . . tailored to that specific CDC.

HDEL software CDROM self study products make certain promises; for quality, currency and includes more than just software on a CDROM. The printed FTR gives you the added freedom to review and study your self study material anywhere – anytime.

There are times when we know we will have to make a purchase that might cost a little more and we will gladly do so for quality, when the stakes are high and important (as is true, concerning career promotions !) .

HDEL, Inc.is a business, professionally staffed with multiple – advanced college graduate degreed professionals. Developing, testing, verifying and certifying self test study programs, applications development, applications interfaces, self study materials for both military and commercial customers throughout many walks of life. As many of our customers are serious about their careers and exams preparations . . . so are we in the development, publishing, and distribution of the tools that aid these individuals to achieve their goals ! This has been our focus from day one ! To provide the best quality products that can be obtained.