How do you paint pickled oak spindles?

Start by cleaning them really well . Sand lightly and wipe down again . Take painters tape and carefully tape off the bottom near the floor and the top near the bannister. Grab your brush and paint , now you're ready .

Everything C.D. Scallan says is great advice. I would only add using a primer first to make sure nothing shows through! Good luck!

Your balusters can be painted easily. I would use a prime coat then a top coat. I want to do the same thing in my house.

Just came back to say I wouldn't use painters tape unless you don't have a steady hand. There is a clear separation between the balusters and the railing and steps.

I'd suggest chalk paint so that the most work you'd have to do was in the cleaning :)