Hello all, new to this forum.

Would just like to know where to start with all this. Am currently sitting at 21 years old with mostly manual labor job experience with some online marketing (web design) mixed in there as well. Recently I purchased the All-In-One CompTIA A+ Certification exam guide in order to pursue a good grounding and will continue with the compTIA trio as well. My question is one regarding the experience required (or in some cases not required) in finding a job. Seems that a degree was not necessary for some but what I cannot understand is how they got their start in the first place. I feel like even if I knew somebody high in the field I would look like a jackass trying to get into such a complex field with little to no prior experience.
For those without experience in the field who have gotten jobs and learned as they go, can you please share your experience on how you got there in the first place? Did you apply to jobs on Monster.com? Walk into geek squad? Staples? Please share!