You are a 3A :)
You are definitely in the 3 category. Probably 3a and/or 3b. Your hair is beautiful!!!! It looks like you might have a fine density ( not too bulky). However the individual strands look thick. Difficult to say from here but it looks like you will do well with leave in conditioners and gels. You can probably use light oil. You may need to cut your hair in more layers if you want volume, and/or use a diffuser if you like bigger hair. The thickness of your strands may weigh it down.