It is not that easy to learn how to make Mac faster, but it can be done. There may be some changes to how one uses their computer, but in my opinion, they are worth it for better performance. These include running a program at a time, deleting unnecessary files, backing things up, etc. I have to consider the amount of memory that is being used up at once and how large the files I keep on my system are. I try to backup everything I can, which is a good start. I am currently looking into some kind of cleaning programs to clean out what sits in my system taking up much needed room. I hope that this will help my system.
The Phat Photographer