Refinancing, hemlock to aquire first deal

I am in the process of educating myself in the "real estate investing game". However I am a home owner in Laurel, MD and have been for almost two years now. I took out an FHA loan and I'm at 4.5% interest. My mortgage is 2k a month. I've been thinking about refinancing but am hearing a lot of mixed reviews and not sure what the right move is? Furthermore, I do have some equity in the house and at some point I'm definitely going to take out a line of credit against it as a down payment on my first deal. Thoughts on what type of plan I should come up with moving forward