Find a way to go for free

Many institutions will let you audit a set number of classes per semester for free. You won't get credit or have them appear on your transcript but you will gain all the other benefits of that class, including lab time for some sciences.

Many colleges and institutions allow employees to take classes for free or absurdly cheap.

Many employers have various forms of tuition assistance available.

This is a tough one but there are grants available for almost every person for almost any reason. Successfully identifying and applying for them is the real trick. That why people who specialize as grant writers and financial aid exist

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These are similar to scholarships but are usually supplied by non-profit organizations to either members or eligible members of the community. A friend of mine graduated from Cornell University and a good portion of his course work was covered by a series of fellowships from his church. Many. many hours of community service and worship were all that was asked in return.

When my spouse went back to grad school through an online program, I attended every class with her, helped her study, and was a willing partner in assigned projects. No degree for me, but I learned a lot.

More and more colleges are recognizing adult learners and the life experiences they have. You may be surprised that combined with advanced placement classes you took in high school, the couple semesters you hung out at community college, and the past decade you spent managing increasingly complex businesses that you already have, or nearly have the credits necessary to complete a degree.

Similiar to #3 above, but with even more perks. Many overseas schools seek English speaking teachers who are willing to travel and teach in the developing world. While often times these are primary or secondary schools, positions at colleges exist as well. Or perhaps the secondary school has an arrangement with a local institution of higher learning.