Hi Guys,
I'm new over here obviously. To give a small introduction, I have been interested in IT since I was around 7. Went to college, but had to stop halfway (actually at the start it self) because of a unfortunate incident with finances.

And I just quit my good for nothing job (Or at least i think I did.. or I will get fired.. or something

)
I have a OK idea bout assembling a Desktop and fixing them and so on, having assembled all my Desktops since I was around 12, fixing both mine and my friends computers for years. But I don't think I'm really at a level to get a job and obviously I can't get one because I have nothing to show anyway.
So after years and years of doing everything with nothing to show for, I figured I'll start here. My problem is, today is the first time I went through the objectives (or heard of A+) and after spending a while reading, all the units are looking same to me. Any recommendations on which unit I should choose to do with the essentials? Is there any sorta advantage doing one unit vs another?
I'm really sorry if the answer is staring right at me.. 30 hours of sleep deprivation can make you lose focus.

Thanks in advance