Build Your Own Recording Studio Infographic - Great reference. The biggest area I differ is on preamps. I'd highly recommend looking into the Golden Age Project stuff for pres. They make great clones of high end vintage gear.
Guitar THEORY - 7 Undeniable Reasons To Stop Neglecting It!
Guitar Scale Wall Chart. Read more about the fastest way to learn theory for guitar in the link.
Scale Formulas | Discover Guitar Online, Learn to Play Guitar Más