When I was younger I always admired how my mom could tell me what a flower or plants name was. Once I became a homeowner and started to garden and plant flowers I wanted to know what I was planting and know how to perfect my green thumb just like my mom.
For quite some years now I have been saving my plant tags and journal where I planted things and how they did. This is honestly one of the best tips I could ever give someone who is starting out gardening. Whether it's a vegetable garden and/or a flower garden this is extremely helpful. Now, I don't write in it every day, just when something happens...like when a plant dies, or seeing that my tomato plants are producing a lot.
These tags are chalked full of information like where to plant, how often to water, etc. I only save the ones that are new to me. In other words, if I planted it last year and I saved the tag I don't keep it for this year. How I journal each plant is really pretty simple. I write down where I planted it (I even draw a chart, no it's not pretty but it does the trick), I keep track of it's behavior and I write down what type of fertilizer I use. I will add pictures of my good work. The dead ones don't make the cut.
I hope this helps you in the future with anything you plant in your garden. Every year I look forward to doing it all over again and looking at the previous years. Now get out there and get in the dirt.