Hey Diamond,
DO continue your education. There is so much valuable material out there. Books, forums, blogs. Whatever platform, always keep learning. You will never know enough.
DO ask questions. Whenever you hire a contractor, learn their processes. Whenever you speak to a real estate agent, learn what they do and ask questions about investing. Some agents aren't investor-centric and their advice might not be investor-friendly.
DO enjoy yourself. If you enjoy what you do (and by that, I mean real estate), then you will prosper. You will view what others view as cons or setbacks as learning opportunities.
DO NOT think you know enough. Real estate, while sedentary in many respects, is an ever changing field. In order for you to prosper, you must keep abreast of what is going on around you. What can you do to be a better landlord? What can you do maximize profits while remaining true to your tenants? What can you do to improve the community?
DO NOT cut corners. Horror stories begin with those who cut corners. While there are exceptions, if you spend the money to have a qualified attorney make a lease rather than getting a free "standard" one online, you will thank yourself when your tenant becomes an armchair lawyer. If you spend the extra money up front on a licensed, reputable plumber to handle plumbing matters, you won't have a busted pipe, wet drywall, an annoyed tenant, and an exorbitant repair bill. (There are exceptions, I hasten to add, but you mitigate them by not cutting corners.) If you take the time to explain all the provisions of the lease to your tenants when they are signing it, you won't spend as much time down the road telling them that the lease says they can't have a motorcycle in the living room.
Suffice it to say, so long as you take the time to educate yourself and learn from others' mistakes, you will have a lot of fun in the real estate world. Just remember that there is a lot to learn. Be ready, be prepared, be prosperous.