Instead of buying, how do you become a lender? Where to start?

[Jeff Wright]

I cant purchase because of whatever reason, however I have money just sitting here in and out of the stock market.  But would love the monthly income instead of the uncertainty of the market.  How do you get into lending money?  Are there any good links you can provide or a direction you can throw me to help me look at the paperwork used by lenders, etc. I am green at this.   Where to start.