I'm also taking A&P 1, and I know how you feel about information overload. I just took my first test on Chapters 1-4 (including histology). It helped me to learn one type of tissue at a time and not move on until I knew it really well. I started with epithelium, and learned each type of epithelium before moving on to connective tissue. It also helped me to think about the function and location of each tissue type and how the structure relates to it. It also helps to learn common markings for each type of tissue. Writing out flash cards is helpful (I prefer writing in my notebook, but which ever works for you), and you can use different colors for epithelium, connective, muscular, and nervous tissue. On each card, you can write the type of tissue, the structure, location, and function of each. (For example, simple squamous epithelium is a single layer of flattened cells found in the air sacs of the lungs that allow materials to pass by diffusion and filtration). As you study the flashcards, you can look at pictures of the tissue you are studying in a lab atlas or your A&P book. This helped me a lot when I was studying tissues because I could associate the description of the tissue with what it looks like. Drawing out the tissue on flashcards also helps (I did this, and it helped me even though I can't draw!), or writing out branching flowcharts for the tissues. I was a little overwhelmed with histology at first (especially the different connective tissues), but if you take time to learn it and understand how the functions/locations relate to the structure, it becomes much easier.
I hope this helps. Good luck! You can do it!