You're in GA so I would type "Goergia kindergarten requirements" in your search bar and go from there. Different places have different requirements. That would be public school requirements, at least. If you may do private school, I would phone and ask for the information.
Do make it fun and "quality time" not just school stuff. I taught my son how to count when he was 2 by singing a lot of songs (even the Plain White T's "I love you" song was 1,2,3,4) and while playing at the sand and water table, we would put 4 scoops of water and 6 schoops of sand, etc. Learn 1 letter a week. There's time. Start with A, and talk about it's phonetic sound, go for a walk or a drive and look for things that start with the letter A, get a chalk board or dry erase board and write a full A, then a dotted A, then one with less dots, then have him fill in the dotted ones, then make his own. Let him play, and then bring you a "show and tell" of something that starts with A. The Letter Factory is a little dvd that a lot of kids I know enjoy. Starfall.com has games that not only help him learn how to use the mouse and the coordination for that, but have alphabet recognition and phonics games. Once he's mastered those, he can go on to very basic steps in reading like "_at" and pictures of a cat, mat, hat, bat and you click the c for cat, etc. It goes on from there to beginner "books" online. Between the Lions: a pretty neat show that puts letters together to make words, and words together make sentences. I dvr that because it's never on when we're around the TV. Then we can just watch it when it's convenient for us. He should know the basic shapes: square, oval, circle, rectangle, triangle, diamond, pentagon, octagon and the basic colors. We would take walks around the block or to the park and if we were learning the color brown that day, we'd look for brown things on the way to the park, and whatever shape we were practicing on the way home. A candy when we got home if we found a shape that was the color of what we were learning that week (bonus "points"). Play games, lots, that develop listening and communication skills. (Simon Says; Red Light, Green Light; Blindfold them and make them listen to directions to make it through an obstacle course or around the house to a treat, etc). My son (now 4) was having issues last year getting his letters right. He could sing the song and knew most of the phonics because of The Letter Factory, but he'd draw a blank on letter recognition. So I got him an alphabet train puzzle, with a capital and lowercase letter and a picture like L l (pic of a lion). I've seen these be "real" trains and puzzles, and I bought the puzzle just because he already had 4 trains and I thought a puzzle would be good for more than just alphabet. He'd put the puzzle together bit by bit. Sometimes we had to take breaks, or we'd have to say Lion. la, la, lion. What says "L" and get the letter. We'd put a puzzle piece or three down, and start the alphabet song all over (A, B, C, now what? Looking for D). What's he into? My son was into Spiderman, so we colored spiderman everywhere, remembering what colors he is (red, blue!) and then what color is the bad guy, etc. When eating we would count. If he was being stubborn, a few times I would say "hmm. You can have as many skittles as you can count correctly". Wow, that got him to counting to 20 in no time. We had to move on to how many orange? How many green? DO read to him. Put your finger on the word and follow that way, so he can watch the letters making words, which make sentences, which make stories, and also that it is always left to right. When he sees a letter he recognizes, let him tell you. My son's favorite story was Hug, Hug, Kiss, Kiss and he thought that book was soooooo funny. I had to read it twice a day everyday for the longest time. Since he had the thing half memorized, I started making him call out a word in the middle of the sentence. I'd say "That's right!" and we'd sound it out and then go on a little bit and sound out another word. He was 3 when we started that (almost 4). Now we've got a little calendar for him and keep up with his "schedule" on the calendar (preschool/daycare M, W, F; soccer games M, Sa; kung fu class Tu, F; awanas W, church and family day Sun; payday for his allowance is Sa, and special days like "we're going to a movie on this day, or you'll see Pops on this day, etc) With that, and especially since we have a strong routine, he is learning his days of the week, what he does on what days, and that after Sunday a new week starts. Also, weather is something they talk about a lot in his preschool / daycare: sunny, cloudy, rainy, hot, cold, etc. Have fun. But yes, he needs to know how to write his name and to recognize his name among others (to pick out where his cubby is or whatever). Practice writing with him a few minutes everyday, especially the letter of the week. And on the last day of the week, say "Ok, we learned A, then B, now C. Let's write all 3 letters! I know it sounds silly sometimes, but really: you'll get a lot more out of him with games and fun than you will sitting him at a table. Have fun!