Just Preach It!
If you're waiting to develop that perfect sermon outline, I'll never happen.
If you're searching for the book that will transform your preaching, it doesn't exist.
Perfection is what keeps people busy researching about preaching, instead of actually preaching.
If you focus on studying the Bible, the outlines and books will serve as help instead of a distraction.
Also, you don't need a pulpit to start preaching.
Find a public street corner or public gathering and lift your voice in the open-air.
Find a nursing home and start a preaching ministry there.
There are more than enough opportunities to preach, that doesn't involve being in a church-house.
Just find a place and preach it!