Dude there is A LOT more research you need to do. It was YEARS of reading before I jumped on my first cycle. Learned a lot during that too. There are a lot of stickies that should be read.
http://www.steroidology.com/forum/anabolic-steroid-forum/598646-oral-cycles.html
http://www.steroidology.com/forum/anabolic-steroid-forum/153723-300mg-vs-600mg-testosterone.html
http://www.steroidology.com/forum/a...-aromatize-inhibitors-gyno-pct-must-read.html
http://www.steroidology.com/forum/anabolic-steroid-forum/111479-massive-newbie-info.html
Read those, over and over. I get it that you're scared, maybe injectables or any AAS isn't for you. I was nervous on my first injection but after reading, checking youtube, etc I learned that it wasn't all that bad.
500mg, split TWICE a week is the standard, 250mg Monday Night, 250mg Friday morning. Most start with this and adjust UP from there. You should inject every 3.5 days, Monday Night/Friday Morning or whatever suits you but every 3.5 days. An Aromatase inhibitor (AI) should be taken during cycle, up to post cycle therapy (pct). Aromasin is your best bet as it won't cause a rebound in Estrogen, possible causing gyno once you come off of Aromasin, there are other options too though. It is not taken during PCT (typically)
No orals should be taken without TEST at a minimum. Orals shut you down, even at a low dose and you're not providing your body with Test so you're hurting your self and killing your gains until your natural Test levels come back up. Either START Test with Aromatase inhibitor (AI) now or stop dbol until you're ready to go full boat.
As far as injecting, if you have 250mg/mL bottles, you would take a full CC/mL into the syringe, pull it from the vial and you're set. Hold the syringe upright, if there is any air in it, tiny bit won't hurt, you're going into the muscle, not a vein. Now on the veins, ALWAYS APIRATE. After you have the needle in, pull LIGHTLY back on the plunger. You might get some air bubbles in there if you pull back too hard, that's just the Test inside. If you get NO blood in the syringe, push away. Nice and SLOW, push in and pull out needle when finished.
Like I said, READ and READ more. I put all the basics up there, as far details of needle size and injection points. I like quads, back right portion of right quad, back left portion of left quad. I like the Dr. Runels method
A painless injection of testosterone: The Dr. Runels Method - YouTube but you will learn there are plenty of other spots to inject, delts, etc. I use 27g 1.25" needles but its slow to inject. If you don't mind pain, you can go to a 23g. I wouldn't go much larger i.e. 22/21/18, etc to inject but to each his own.
I withdraw with a 18g, pull what I want in there, pull it out of the bottle, pull air in and change the needle, push out there air until you get a tiny droplet at the top of the needle. Clean your injection point with alcohol wipes and push the needle in slowly. If injecting in your quad, you might hit a nerve but you can push past it or pull it out and put in another spot. I push past it, aspirate and push it all in. Pull it out slowly and dispose of properly. You're trash guy will appreciate it.
I'm sure there is a lot I'm not covering but like I said, I gave you the basics. Read up on the threads I posted, watch the video and enjoy. Good luck