They usually require startups to demonstrate some recurring revenue.
Incubators focus generally on startups that are very early stage and show little to no recurring revenue. They provide a workspace and can charge monthly fees for using their services.
Coworking spaces charge either a flat monthly fee or offer pay-by-the-hour formulas. They offer you a desk, wifi, access to meeting rooms, use of print/copy/fax machines, coffee & vending machines, storage lockers, kitchen, lounge/chill-out area etc. They are usually quiet but sometimes rent private offices within the coworking space so that you can work and talk with your colleagues.
We will cover how to raise money later on in this course.
If you want to know a bit more about angel investors:
20 Things All Entrepreneurs Should Know About Angel Investors
Find out about the public funding available in your country.
You can obtain funding against equity, and you can borrow at special rates.
Note: This is a European initiative and just an example. You can find many more.