First of all, welcome to our community, we always appreciate newcomers. Like the previous few people already said, don't join a team from the beginning. Take some time to learn the dos and donts of our beautiful sport. Learn what airsoft is all about, ask questions, look up videos and just attend some games. Ignore people telling you to stop playing games like CoD or battlefield, but i will warn you to never compare a video game to this sport. Many of the people you will encounter are very serious about airsoft and do not appreciate childish, immature behavior. It is not my intend to frighten or scare you off, but merely to explain what you will encounter and something to be ready about.
A ghillie suit is pointless, unless you plan to attend mil-sims (military simulations) Find yourself some gear that you feel comfortable wearing, that you can run in without causing discomfort to your body. Boots are not a must but a personal preference. If you don't like boots, check out some good tennis shoes.
Last but not least, be prepared for good airsoft equipment to be rather on the expensive side, it will take much time and money to acquire better and better stuff to compete with some of the guys that have been playing a lot longer than you.
And one last time, ask questions - ask questions - ask questions