A very large disposable syringe fitted with a short length of gas line tubbing is a great way to bleed air from the brake hydraulics, you push the gas line tubbing onto that bleeder screw the one you oops broke off ) loosen the bleeder slightly and push clean brake fluid backwards through the system. …difficult to describe better in words but this technique overcomes the problem of bleeding air from an inherently low point in the brake system.
Loctite offers some excellent product to accommodate all of the aforementioned screw thread problems and a small bottle goes a very long way.
Wheel spokes are something that you should never try to adjust dry, as they have a propensity to corrosion and seizure, spray liberally with WD40 a full 10 minutes before making any adjustments and save yourself a ton of grief. Invest in a real spoke wrench.