Wow. Good luck. I take it you've never painted before? Most of us are underwhelmed with out first attempts. Given the quality that you see online, or with studio paint jobs, don't get discouraged!
There are cheap tricks to get you tabletop models painted quickly, if you are not interested in perfection.
You can start here:
There are a lot of people, both advanced and neophyte, who have put out a lot of armies quickly with base coat, wash, and highlight. You can go back into them later if need be and add complexity.