Consider what type of program would be best for you to enroll in. What degree are you interested in pursuing? Think about whether you want to commit yourself to a 2-year or a 4+ year program. Browse the website and look up facts on the school such as average class size. Look at the college's Career Center and see what type of resources and connections it has to help students find a job after graduation.
Check that the courses fit into your schedule. Mature students usually have more commitments than younger students, so make sure that you can set aside some time for school without disrupting your life to the point that it is unmanageable. Some colleges provide night classes for adults with daytime careers. There is also the option of taking classes online, which gives you more flexibility and allows you to study from the comfort of your own home.
Give yourself plenty of time to put together an application. It is ideal for any student to begin to prepare their application a few months in advance. Putting together a solid application is important, so give yourself time to do things like find individuals to write your letters of recommendation and write a strong personal statement. Be aware of the deadlines for admission and make sure that you are aware of all the requirements that are needed to apply (transcripts, letters of recommendation, etc.). If you have some college credit from before, make sure to get official transcripts from the school/s.
Find individuals who can write strong letters of recommendation for you. Ask your boss or a supervisor who knows you well to write this letter for you. Since you usually need a few recommendations, ask your current boss and a former boss that you worked with closely.