This starter base will help you get up to speed in a hurry.
Rather than a staged sequence of blueprints, this build is naturally progressive. Start by building the mini-factories just inside the entrance. These make the basic building materials. Load them manually at first. You can also add chests of iron and copper to feed the belts until you have belts of plate coming in.
Based on Brian's Bootstrap. Also check out Brian's Self-Building Mega-Factory (SBF) which is an amazing modular factory system using Brian's Trains. And if you're playing with SBF and you want to keep the biters away, try my self-building Artillery Outposts in Brian's Invasion!